This is a very old video. I revisited the topic more recently and feel like the new video answers the question more deeply: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@jdwalters9489
4 жыл бұрын
Respectfully, I disagree. The new video takes an early digression into work and we get into the weeds of forcexdisplacement whereas this one focuses on the fundamentals of learning about what energy is by examining where we find it, and how forms of energy that 'look different' actually boil down to either kinetic or potential. My students found this one more useful.
@BlueButtonMasher
4 жыл бұрын
your video on the gradient seems to answer the question in a less abstract and more useful way imo.
@lilianagarcia6225
3 жыл бұрын
Good video XD
@lilianagarcia6225
3 жыл бұрын
@@jdwalters9489 I do not disagree
@midnightdragonfly9707
3 жыл бұрын
Adding location and movement brings to mind the phenomena of the ‘eternal ‘now’ principle. That the amount of energy is relative to the location and direction of matter. However, I would omit ‘gravitational energy’ as a thing when really that just refers to Earth’s solidified magnetism holding all matter in place.
@triton9687
2 жыл бұрын
Him explaining why we don't know what energy is, gave me a better understading of energy then any book I've ever read...
@Cb22075
Жыл бұрын
Right!?!? same!!
@JoakimfromAnka
8 жыл бұрын
Finally an honest video on this subject.
@Mazaroth
6 жыл бұрын
Adrijana Radosevic Maybe he was talking about all the pseudoscientific stuff and the many, many, MANY snake oil salesmen out there.
@unknownnepali772
5 жыл бұрын
yeah!!!!!
@redstoneworld6027
3 жыл бұрын
ik
@brigittelars5564
2 жыл бұрын
Why can't these science guys ask the creator engineer of the universe, huh!!
@mustafaalnsour1676
Жыл бұрын
@@brigittelars5564 Can anyone? I mean that would be great. Do you possibly have his phone number?
@ScienceAsylum
10 жыл бұрын
Almost all science sources explain what energy does. This is my attempt at explaining what it IS.
@RohithMusic
9 жыл бұрын
+The Science Asylum Noether's Theorem offers a beautiful insight into how energy arises as a concept due to time translation symmetry. Maybe you could talk about that?
@ScienceAsylum
9 жыл бұрын
Rohith B.V. That's not a bad idea :-)
@SharkLe-bt8tg
7 жыл бұрын
Hi nick!
@TheTrickGuru
7 жыл бұрын
The Science Asylum You say in your video that energy can't be broken into parts - however doesn't quantum theory state that it is? For example photons which are the quanta (discrete packets of energy) of the em field.
@ScienceAsylum
7 жыл бұрын
Brendan Stoneham People need to stop teaching that photons are discrete packets of energy. They're packets of light, not energy. Light /has/ energy just like everything else, but that energy can have any /value/ (E=hf). The light is broken into parts but energy is not.
@5hanx
5 жыл бұрын
I recently got really carried away with watching your videos, running out of new ones so gone back to the old ones you've done and it's interesting how you've changed over the years. Honestly some of the best videos I've ever seen, I really really appreciate every single hour you put into making these videos. Stay crazy!
@lilianagarcia6225
3 жыл бұрын
Yeah stay crazy! :)
@mumhustler
10 жыл бұрын
I like this guy's no bs approach. +1 sub
@realdanielpeach
3 жыл бұрын
"no bs" what was that intro lol
@jarzyna1231
7 жыл бұрын
I'm really glad i found your channel, none of other ytbers can't share knowledge with such a simplicity, passion and humour. You sir deserve way more subscribers
@hyronvalkinson1749
8 жыл бұрын
Great work condensing all energy into two forms everyone understands (potential and kinetic) and then using relativity to show that they're one and the same. I know people who take college-level physics struggling to make sense of the concept of energy. I find it funny that it took me so long to figure out what you've explained in a 4 minute video. Hope this gets more views!
@ScienceAsylum
8 жыл бұрын
+Hyron Valkinson Glad it helped!
@Zelink108
7 жыл бұрын
xamarmm people keep saying "nothing" but energy can neither be created nor destroyed, energy is something that has always been.
@lilianagarcia6225
3 жыл бұрын
@@ScienceAsylum It really helped thank you so much! :)
@phxbillcee
7 жыл бұрын
You're a nut, but an informative nut! I don't always follow totally, but you give me something to grab on to & think about. (Only have 2 yrs of college, no physics & am mostly self-taught since {I'm 62 now}). I try to keep up with what we "know" currently, but that can be somewhat slippery, depending on how divisive the current schools of thought are in a subject. I really appreciate your channel, &, please, keep up the good work!
@trash9152
6 жыл бұрын
*N U T*
@chasingtheunknown3763
5 жыл бұрын
you're cool. :)
@icelsikupingmerah
5 жыл бұрын
phxbillcee damn 62 you’re such kind
@jeffrobertson5864
6 жыл бұрын
The answer to what is energy is really pretty simple. Energy is the capability of something to undergo a change. It’s not a fluid, it’s not a substance. It’s just a number and a very useful number. But like mass, momentum, and velocity, it’s a number that can only have value in relation to something else.
@01MeuCanal
5 жыл бұрын
I started to write above and then I stop and read some lines here. I was think exactly the same yo said. Energy is the capability to change, so its not something but a property of the universe. Some kind of "status". Other cool phenomena is electromagnetic force. There's no perfect explanation how a particle can exert force in another distant one. The Electromagnetic theory gives us information useful enough to make use of electricity and magnetism but doesn't really tell us what things are. I'm thinking that maybe the universe and matter is a emergent property of some underlying thing! What do you think guys?
@roberttrisca8210
5 жыл бұрын
U juat said what it does, as all the others, not what is it. " it s the thing that does that." what exactly is that thing.
@01MeuCanal
5 жыл бұрын
@@roberttrisca8210 Its not a thing. Its more like an effect or a property of the universe. IMHO
@roberttrisca8210
5 жыл бұрын
@@01MeuCanal i just called it a " thing" to outline the distintion between it and it s effect, as in the video he tried to talk about the " it " not it s effects, concluding that the mother-comment tried to explain the effect of " it " .
@l0_0l45
5 жыл бұрын
@@01MeuCanal Thats where relativity and quantum mechanics has its limits of giving us explanations. Thats why string theory is comming up and efforts to verify that it is true or not are being taken.
@srustibaral4179
Жыл бұрын
I've always been intrigued by this work. Energy. We know so much about it, yet we do not know what it truly is. Even though it will always be something incomprehensible, your video has given me a lot of clarity on the topic, and now I am less confused by the whole concept lol. Thank you.
@srustibaral4179
Жыл бұрын
word*
@alitheeternity4230
11 ай бұрын
I fid see in the halldiay and reisnick fundammetals of phyisics that energy is like a number we have assigned to things and work is like transferring energy.
@NotALizardPerson69
7 жыл бұрын
"You gotta use your mind's eye" woah dude.
@frederickj.7136
5 жыл бұрын
So, Mary Jane is now legal in several states. Who would have guessed?
@kochenk9521
10 ай бұрын
I've always felt the way we define what energy is to be so weird. I'm glad I'm not the only one who feel this way.
@seastormsinger
8 жыл бұрын
I just gotta say, aside from loving your videos for their content, I love love love the little grammatical corrections you throw in. They make me very happy.
@srijansingh8124
4 жыл бұрын
This person is just making me love science more and more❤️
@ΣτέργιοςΚατσογιάννης
7 жыл бұрын
I love how the video starts. The visualization of a person bumping around and acting "a little crazy" is a common misconception amongst kids about energy, thus associating the lack of energy as being tired. That's a great epistemological obstacle when teaching the more abstract concepts of potential and kinetic energy.
@def_editz_4
3 жыл бұрын
Ελλαδα
@maplesyrup2944
8 жыл бұрын
Finally something that makes sense of the types
@kkknwjmsmdn9552
4 жыл бұрын
I am rooting for you.... I hope you get a million subscribers! !!
@McBridger
6 жыл бұрын
I use my energy on: Lazyness (btw I watched this for school)
@MrWildbill
8 жыл бұрын
I think both the unknown and our inability to describe many things, like energy in terms of "what it actually is" makes physics so compelling to me. The "whys" are pretty cool also, why energy acts like it does, why after the big bang all of that energy did not just continue to radiate forever as photons, why did it take the form of matter in the first place. If it makes your head hurt thinking about it too long then you are probably on the right path :)
@livvielov
10 жыл бұрын
Really good video a little bit disappointed that we don't actually know, though
@ScienceAsylum
10 жыл бұрын
Yeah, it's kind of a bummer.
@livvielov
10 жыл бұрын
***** but there is an upside to not knowing everything. It means there's still stuff to discover and learn
@ScienceAsylum
10 жыл бұрын
Olivia C-G Yep! I'm pretty excited about knowing one day and I'm hopeful. Humans are pretty good at figuring things out ...when we try, anyway ;-)
@cretaceoussteve3527
7 жыл бұрын
Ever science I started learning science, I've been like, "this makes no science!" But science I love science, all the science point to learning more science!
@Reign_Of_Is_REAL
6 жыл бұрын
Olivia C-G AND ....you never will because there's no explanation. 👍😁
@cjheaford
7 жыл бұрын
Nick you explain science so well and make it fun. Please keep these videos coming! I like Hank Green on the sci-show channel a lot, but for example this video on energy was SO much better explained in roughly the same amount of time. Particularly the statement "Energy is just a number, and that number never changes." I've never heard the concept of energy put so well. You have a gift as an educator and I enjoy seeing your channel grow in subs. You truly know your craft and present it expertly. I'm a fan!
@ScienceAsylum
7 жыл бұрын
Thanks!
@chudchewer2548
7 жыл бұрын
THANK YOU. I'm sick of people defining energy by the way it behaves instead of just admitting we don't actually know yet
@Cb22075
Жыл бұрын
Thank you!!!! Your video is the best of all the "what is energy" vids bc your the ONLY one who actually admits we dont really know what it even is or how to define it! Before watching your video I was thinking energy was some physical thing- I kinda had like a clear sphere in my imagination lol- now your making me realize I wanna say energy is actually the behavior of the thing, similar to a wave- a wave isnt the thing itself, a wave is the way the thing is behaving or moving... does that make any sense??.... correct me if Im talkin crazy...
@sgtsnakeeyes11
9 жыл бұрын
thanks, this was exactly what I was looking for.
@ScienceAsylum
9 жыл бұрын
sgtsnakeeyes11 You're welcome.
@kristellfadul1906
6 жыл бұрын
I truly love your videos!! Each one makes me a little bit crazier!! I use my energy to learn about quantum physics, watch football games, bake and sleep. I like variety. ;)
@Muninn801
10 жыл бұрын
This video is kind of fantastic. I would like an expanded version.
@ScienceAsylum
10 жыл бұрын
Thanks. I'll consider making a follow-up video.
@huntingresonance
10 жыл бұрын
***** As a Physics teacher I just wanted to say, after just discovering your videos they really are the perfect balance of meticulous attention to detail and a fast and interesting pace of delivery. I'll be pointing my students in your direction first thing tomorrow. Finding that balance with youtube videos is very difficult but you've nailed it. Thank you.
@ScienceAsylum
10 жыл бұрын
huntingresonance Thanks! This video is one of my personal favs.
@trucid2
3 жыл бұрын
Check out his video on Noether's Theorem.
@ajithashok5255
5 жыл бұрын
The definition I have learnt is "energy is the capacity to do work" (while studying in 9th standard) Is it right though ?
@ScienceAsylum
5 жыл бұрын
It is correct. It just isn't very satisfying. This newer video might have a little more satisfying of an answer: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@faith1160
3 жыл бұрын
My teacher told me to watch this and to be honest it’s rly good
@trevorgreenough6141
2 жыл бұрын
Finally, a video with a science guy with an answer of "I dunno", I like that
@teokon5165
2 жыл бұрын
In the Greek language answers are "hidden" inside words. Energy comes from Ενέργεια. Ενέργεια comes from εν+έργον. Εν means inside. Έργον means work. So energy is "the work inside", the work that is able to be produced. All the point in just one word..
@ScienceAsylum
2 жыл бұрын
COOL!!!! 🤓🤓🤓
@ianbardrick5708
8 жыл бұрын
This is excellent - has been a major help in helping a student come to terms with the concept.
@philjamieson5572
4 жыл бұрын
Once again, I've really enjoyed learning from this channel. Thanks.
@sudharsanvj8531
7 жыл бұрын
I appreciate your honesty. Strictly speaking we don't seem to truly understand anything ! We just keep observing and have a list of observations !
@asadaslam
6 жыл бұрын
I have learned more from this channel than I have ever from my school Physics class.
@gabrielstracener7005
6 жыл бұрын
The fact that you actually talk about the one thing that no one has ever actually talked about before is amazing. This same question has been boggling my mind for quite some time and I came to a some-what conclusion that energy is just like our math. It is simply a "variable" we use that helps us understand reality the same way that the variables 1 and 2 help us understand that an apple added to a group of 2 other apples make 3 apples. I kind of believe that energy is really just like the numbers we created since the beginning of mankind but I don't believe that other people see it this way and figure that energy must be a substance. The same way that numbers can work universally, energy is the same thing. I think of energy as just another number "1,2,energy,3...." even though that is not an accurate representation. Now this is not my definite thought or explanation of what energy is or its value because there is much more to it then that. Anyways, that how I think of energy and what I believe it to be in a way.
@johnconnell8436
3 жыл бұрын
That's probably the best definition I've ever heard. 👍🏻
@Hythloday71
6 жыл бұрын
Energy isn't a 'thing'. It's an abstract concept, a number. It's a number we assign to a system to tell us how many cups of water we can boil if you give me that system to play with ... or some other arbitrary unit of work.
@mohamedddos7301
10 күн бұрын
This is the best video I ever seen about Energy
@ScienceAsylum
9 күн бұрын
Really? I made a newer video that _I_ think is better: kzitem.info/news/bejne/1KSgl6t4raBnfG0 You might disagree though.
@Bassotronics
6 жыл бұрын
When I have thoughtful energy, I watch The Science Asylum. :)
@Lightning_Lance
6 жыл бұрын
I'd love to see a behind the scenes of how you shoot these videos. I imagine it'd be hilarious, with you changing in and out of the lab coat and/or maybe filming things out of order so you don't have to change as much.
@myway8772
7 жыл бұрын
I like the cut of your jib, energy, I like to think energy is life force, the stuff that animates everything. I don't know if you explained what that is in this video but I'm sure no one really knows exactly what it is, except that we are all floating in it!
@Lon3Assassin
9 жыл бұрын
Incredibly well thought out and clearly explained! This is really informative :)
@WESTPRINGLE
5 жыл бұрын
so what is energy then?
@jannickharambe8550
2 жыл бұрын
this is more satisfying than other videos on energy but it still leaves me unsatisfied energy is just a number.. this does not seem right!!!
@verzangel2106
4 жыл бұрын
2:21 That molecule be lookin' *THICC*
@Meditate6969
4 жыл бұрын
Really...This was quite a good explanation...Thumbs up
@karinlindgren717
2 жыл бұрын
This video makes me so happy. 🥰 Thank you very much for making it!
@ricomajestic
7 жыл бұрын
Total Energy is just a feature/property of the universe that never changes. The amount doesn't change that is but that feature can exist in different forms!
@soilbroker
7 жыл бұрын
In Greek the meaning of energy is that is the potential (of an object) to create work. Energy is not a think. So you should definetely explain in a video what work is and how it is related to energy.
@31Sparrow
7 жыл бұрын
a Joule measures energy with the units: kg*m^2/s^2, but what does that mean? Consider acceleration with units m/s^2: how fast the velocity (m/s) is changing. A newton describes acceleration of a mass with kg*m/s^2: how fast the velocity of a mass is changing in one dimension of space. By adding the additional meter unit to the newton, we get the Joule: how fast the velocity of a mass is changing in two dimensions of space. It seems to me that when matter is moving in two dimensions at once, it is being torn apart, so maybe energy is a measurement of 'how much a mass is exploding'.
@TheAlphaMaleProject
8 жыл бұрын
we can't see energy but we can feel it's effect
@boomstick9172
8 жыл бұрын
+Manikanth Goud It has no effect. Forces have effects. Energy measures possible effects. It's a theoritical measure, like numbers.
@ScienceAsylum
8 жыл бұрын
+Ιωάννης Λέπουρας Just because it's an INDIRECT measurement, it doesn't mean it's not real.
@boomstick9172
8 жыл бұрын
***** What? That's like saying numbers have effects on physics.... PHYSICS have effect on physics. Numbers are used to describe them.
@beaconterraoneonline
7 жыл бұрын
Seeing and feeling are the same, a tool ... they are observations or a measurements that something is there.
@Devilofdoom
5 жыл бұрын
@@boomstick9172 I mean numbers do have an effect on physics. So... not really sure what you're on about.
@frederickj.7136
5 жыл бұрын
Now this is one user friendly and very, um, *lucid* exposition... tightly packed into a very small patch of spacetime. I'm glad The Science Asylum can be found within my light cone. Thanks!
@ScienceAsylum
5 жыл бұрын
FYI: I expounded on this topic more recently: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@cavalrycome
9 жыл бұрын
0:35 Only thermodynamically free energy can be used to do work. 2:42 When you use the word 'mass' here, I think what you really mean is 'matter'. Kinetic and potential energy both have mass. 3:19 The amount of kinetic energy something possesses and hence its mass is an observer-dependent quantity in special relativity.
@ScienceAsylum
9 жыл бұрын
cavalrycome Technically, yes... but when we start talking about mass being observer-dependent, we've stepped beyond the scope of this video. I've made videos since this one explaining what you're saying.
@jeffrobertson5864
6 жыл бұрын
Spot on. Energy is just mathematical construct that doesn’t really exist outside the human mind. It’s just a number that is very useful in identifying and predicting patterns in the natural world around us.
@dominiquefortin5345
7 жыл бұрын
For me what always made sense for energy is to think of it as a disturbance in the fabric of reality (or in our universe). Like when you throw a rock in water, it will produce ripples at surface. I heard it being called a field and there are many different ones in our reality. Also, the stuffs of our universe are able to capture those disturbance and keep them for different amounts of time then release it when the conditions are right.
@ScienceAsylum
7 жыл бұрын
If you want to get super technical, even the "stuffs of our universe" can be looked at as ripples in quantum fields.
@petersteenkamp
5 жыл бұрын
Definition: Energy = capacity for change. Change can for example be change in location (kinetic energy) or change of state (matter/liquid/gas) etc. Capacity means capability plus there is a quantity to it.
@rebeccalopez2997
6 жыл бұрын
What a relief this is finely out in the open.
@tjzx3432
7 жыл бұрын
I figured this out a few months ago, and came to the same conclusion. Wonderful.
@karlaagekirkegaard7598
3 жыл бұрын
A very good explation of something that cannot be explained. If energy is a property, it cannot be "just a number". A number is a number for something.
@ScienceAsylum
3 жыл бұрын
I give a more satisfying answer in a more recent video: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@GH-oi2jf
2 жыл бұрын
Easy. It is the capacity to do work. In simple cases, we apply a force to move a particular mass a particular distance. Energy comes in various forms, but can always be applied ultimately to moving things around.
@edgeeffect
24 күн бұрын
0:08 "I am Cornholio! You have TP?" ... "Calm down Bevis!"
@brinkman4925
4 жыл бұрын
With degrees in electrical and nuclear engineering I spent hours contemplating relationship between force and energy. Determined that energy might not be real. This put my mind at ease knowing someone else agrees. Force to energy to work equations are easy on paper but hard to conceptualize.
@ScienceAsylum
4 жыл бұрын
While energy isn't a real physical thing, it is _useful_ so I tried to give it a better definition in a more recent video: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@holgerjrgensen2166
4 ай бұрын
The Life-Desire is the Motor of Life. Will and Gravity, (Life-side/Stuff-side) is in direct extension of the Life-Desire. The Hunger- and Satisfaction-Principles is the Compass of Life.
@maxjacobs9980
6 жыл бұрын
I was trying to explain Energy to my friend who is an accountant, and I came up with a nice analogy. I like to think of energy as a the currency of the universe, similar to cash or bitcoin. Imagine you are shopping at home depot and you want to build something, like a bird house, so you're going to buy wood, nails, and paint. Abstractly, you're purchasing properties of the bird house, and that's what our universe currency buys. I need wood paint and nails, so I'm going to have to buy mass. E=mc^2 -> E/c^2=m. So I bought my mass, I'm going to have to put it together, That's the chemical energy between each atom, this can be measured as enthalpy. "E" = H = Average internal kinetic Energy + Pressure * A change in volume (H = Avg. Int. E + p*delta V) (This is derived from the first law of thermal dynamics and the ideal gas law). And there is energy inside the atom that keeps each atom together but that will get into quantum mechanics. The paint, the nails, and the wood all have an internal temperature, so we're going to have to spend energy on that so the atoms are jiggling. Energy = boltzmann's constant * temperature (E=k*T) -> E/k=T! YAY our bird house is now basically just a collection of stuff, I spend energy to hammer the nails into the wood. I spend energy to put the paint on the bird house, That's called work, so work = energy = force * distance (E=W=F*d). The paint spends energy drying, which is pretty cool, The paint is loosing entropy, but as it's drying the air the air is gaining entropy. Entropy = Internal Energy/temperature, (S=Q/T) Or we could say (S=Q*E/k). In order for paint to dry it has to be spend energy by transferring internal kinetic energy to other things like the air or even the wood, and this is what heat is, and as it loses entropy the paint goes from a very jiggly liquid to a rigid surface on the wood but the entropy of the air and wood increase too, but the heat from the paint drying isn't enough to melt or burn the wood or make the air another phase of matter. Now I have to spend energy to lift the the bird house E= mass * height * little g (E=mgh) -> E/(mg) = h, and I'm going to have to spend energy nailing the bird house to the tree which is work. And now I have "bought" my bird house by spending energy! Energy is similar to bitcoin in the sense that no one has seen a bitcoin physically, like I can have a dollar in my hand, but not a bitcoin. But what I can see is something WORTH one bitcoin! I can use my 1 bitcoin to buy a ball. And my ball is worth 1 bitcoin, so I can use my ball to get 1 bitcoin back. Throughout my transactions, I always had 1 bitcoin, at one point it was in some digital storage online, and at another point it was a ball, but the value of my property was always 1 bitcoin, and in that sense value is conserved. I used my universe currency to "buy" my bird house but my bird house will never lose value in my universe currency. I can store energy in physical things like a battery, a spring, by lifting things, or even mass, but these are all still just manifestations of potential energy. When an apple falls, it's spending the potential energy it stored from being above the ground on falling in the form of kinetic, or when a bomb goes off it's spending its potential energy on kinetic. The amount of kinetic energy purchasable depends on what physical bank you are withdrawing from, if I drop a grenade from 1 foot above you on your foot it'll hurt but it wont kill you. Only when I pull the pin it'll really hurt or really kill you. There are a lot of other concepts and concepts in here like boltzmann's constant, entropy, or little g but these concepts/constants are not necessary to know in order to understand what energy is, but in an economical sense a natural constant like little g or boltzmann's constant is kinda like a conversion factor between currencies, like 1 bit coin is worth about $20,000 so the "bitcoin constant" between bitcoin and dollars is a unitless 20,000. Idk how to explain entropy as if it were economics, but it is used in economics!
@spsarolkar
7 жыл бұрын
In my opinion ,energy is just a (any)differential arising from interaction of two of more substances. Potential energy => Differential in gravitational force acting on two bodies Kinetic energy => Differential in speed between two objects Thermal energy => Differential between kinetic energy between molecules of objects
@stndsure7275
7 жыл бұрын
It is good when we understand that description and explanation is not the same thing!
@RamKumar-to5ip
6 жыл бұрын
"Energy is just a number", u gave the best answer!!!!, its just a number that supports conservation theories, u r a crazy genius!!!!
@v.gopalakrishnan350
6 жыл бұрын
All that these science books say is that energy is the capacity of a body to do work and that it manifests itself as light, heat, mechanical etc. which raises more questions than answers!
@jaimehernadez9943
8 жыл бұрын
great video man keep the work coming
@AStrategyGameDev
6 жыл бұрын
This is great, most other people who try to "Explain" this fundamentally difficult subject, resort to faulty analogy.
@promitchakraborty
7 жыл бұрын
@The_Science_Asylum Wonderful video! In addition to explaining in a very simple manner one of the most fundamental and yet incomprehensible things,it also allayed my anxieties in life a bit; reminding me that most of the things that trouble me in my life are just arrangements of energy, and are not intrinsically fearsome or bad.
@stvnnmnn
7 жыл бұрын
Energy is just an abstract measurement used as a conversion tool for converting the amount of work you can get out of a physical system from one type of system to another. Heat, gravity, electricity, chemical reactions, etc. can all be used to do work. The thing doing the work is what actually exists. Energy is not a "thing" in the physical sense. We equate and convert the useful work using energy as the conversion mechanism.
@PulseCodeMusic
7 жыл бұрын
We have to consider some thing fundamental sooner or later and energy is about as fundamental as it gets. Energy is everything that is.
@zacherydippenaar8524
7 жыл бұрын
Perhaps one of the fundamental questions in our understanding of the universe.
@fangugel3812
5 жыл бұрын
Love the energy!
@shubhamdiwakar540
6 жыл бұрын
Great... Explained very well
@bjm6275
5 жыл бұрын
Energy seems to be the motion of particles. Particles are always vibrating or moving in a given direction. That motion maybe considered energy.
@sergiodavila3290
2 жыл бұрын
This is incredible. Aristotle essentially says precisely what you’re describing in his treatment of potency/act - or more close to his Greek, ability/energy - which is the basis for his claim that reality is merely things energized and things capable of energizing. That corresponds to kinetic and potential energy, respectively.
@anthonyrussell8624
7 жыл бұрын
Energy is the outcome of change and is the movement from one place or from one state to another. That's my late entry.
@Trotskisty
6 жыл бұрын
Is this the only reply here which is essentially correct..?? Geeze. But simpler yet: energy IS simply _motion_. That's it. That's all of it. All the rest flows from that fundamental fact.
@jamesbardsley5300
6 ай бұрын
Hi Nick I love this video and your channel as a whole. You are the best thinker about Physics on YT. One question: You say towards the end of this video: 'Every hypothesis we've ever had that has pretended energy is some kind of substance has epically failed'. Please give one or more examples of thinkers or scientists who have made that hypothesis. And, if possible, briefly say why the particular hypothesis failed. Best wishes James
@zodiacfml
7 жыл бұрын
Stuff we already know. You are actually close to getting what is energy, abruptly stopped on vibration of elementary particles. What happens if we are able to stop or slow these vibrations? In the question, I mentioned "slow". It means, energy is a matter of time too. If time of an object is slowed down relative on an observer, the perceived energy output of an object is lessened too. If we are able to stop the vibration of these particles then it is also the equivalent of stopping their time. What is a particle without time? Nothing. It has no energy. It doesn't exist. Energy is simply existence and the perceived reality of time.
@frederickj.7136
5 жыл бұрын
*Interesting science factoid* for Crazies: The first coherent and reasonably complete short description of the modern concept of energy may be attributable to William Thompson, a.k.a., Lord Kelvin, circa 1852.
@Thelonious2Monk
6 жыл бұрын
It is important to understand that energy always wants to flow from where it is high to where it is low. Along the way it may change its nature from kinetic to potential or any other form. Sometimes it can't flow because of an "energy barrier", but if the barrier is removed - energy will flow from high to low. When energy flows from high to low it can do work. Entropy is a measure of the difference between where the energy is high to where it is low. As energy flows from high to low entropy is increased. Why this is so is still one of the big mysteries of our universe.
@sentfrom4477
5 жыл бұрын
Absolutely first class.
@MikeSmith-cl4ix
4 жыл бұрын
I think it's movement. And everything else emerges from it. Your videos are amazing, by the way.
@Jessthenursecoach
10 жыл бұрын
Your amazing, You are what every instructor shoild be. Please do a video about Quantum Physics and the Universe and its relationship with spirit and man Until next Time Lawrence
@darthglowball
6 жыл бұрын
The kinetic energy of a particle is an inverse proportionality constant whereby a randomly chosen unchanging force that is applied to the particle until it hits a zero velocity from its current velocity is inversely proportional to the resulting distance to get that particle to a halt. I don't know if this is more useful though.
@anwitabiswas4675
6 жыл бұрын
Thank you very much.after watching your video, I have understood that why is people getting angry on me for asking this question several times.
@GradStudentTutorials
11 жыл бұрын
"Can we make a list? ...Definitely....I love lists!!!" haha, crackin' me up.
@SumithBabu
3 жыл бұрын
Hey, thank you for this. In all other videos, they were trying to explain what energy is. But didn't explain what energy is. They are not ready to accept that we are not yet fully able to understand what it is. I think so.
@ScienceAsylum
3 жыл бұрын
I honestly feel like I do a better job in my more recent video on this: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@horophim
5 жыл бұрын
As far as I understand it energy is basically the relation between stuff, based on how they move (kinetic energy) and where they are (potential energy) relative to each other
@ScienceAsylum
5 жыл бұрын
Kind of: kzitem.info/news/bejne/1KSgl6t4raBnfG0
@michaeltebele3305
7 жыл бұрын
energy is a word that allows us to pretend that our clocks are real. it allows to keep track of how things might change (potential) , or are changing (kinetic)
@mrmeowtv6248
7 жыл бұрын
It's okay to be a crazy? Oh boy I think I've gone overboard...
@BryanArthurKlein
5 жыл бұрын
What do I do when I have a lot of energy? I always have a lot of (potential) energy! Now, making it work for me, well, that's another story... Great vid, by the way. I realize I'm a little late to the party on this one.
@johnarbuckle2619
7 жыл бұрын
Excelente video, keep up the good work
@solapowsj25
4 жыл бұрын
Force causes motion and involves mass. Energy is confined forces with the ability to do work. A photon is a quantum of energy.
@solapowsj25
3 жыл бұрын
Photon is a quantum of pure energy ⚡⚡⚡.
@WideCuriosity
4 ай бұрын
I have pondered this myself and I'm glad this was a recommended video. I've never come up with a satisfying answer either, but nice try. Off to look at your later video now.
@davidabdollahi7906
2 жыл бұрын
I WAS LOOKING EVERYWHERE to see what energy actually is instead of what it is capable of doing. Glad I'm not the only one to fail. Apparantly nobody knows
@professorbland
7 жыл бұрын
Energy describes the relationship between points across fields -- essentially the deviation from any equilibrium in which possible change drops to zero
@professorbland
7 жыл бұрын
Think of it as a number or unit that describes relationships instead of the essence of a thing
@ScienceAsylum
7 жыл бұрын
/Potential/ energy describes the relationship between points across fields... even then, that relationship is only the /change/ in potential energy, not the value of energy itself. The same can't be said about kinetic energy.
@JohnStephenWeck
6 жыл бұрын
Greetings everyone, this is my hypothesis for the definition of energy. Energy is not just a number. “Real energy” means the change in a system. Typically, when people talk about energy, they specify which flavor of change they mean (KE, photon energy, gluon energy, etc.). If you remove time, you remove the energy (because nothing can change). Energy is never a substance, nor can it be negative (because of the unidirectional nature of the time dimension - there is no true negative change in our universe). Energy is just an observed characteristic of various changing systems. No real energy means no change. “Potential energy” just means the potential for changes in the future (so the term is ok). During normal operation, a system owes you some specified flavor of changes in the future (you are in effect storing changes). For example, a city needs extra energy to change things in it. So, a power plant is really a “change source”. If you have a battery as a power supply, you really have a “pool of changes”. If you disconnect all the change sources (turn off the power), you will starve the city of changes (and everything grinds to a halt, a bit like in the “The Day the earth Stood Still” movie). So, kinetic energy really means how much something is changing its position over time (in other words energy is tied to velocity). A fast object is changing more than a slow one (so it has more energy). The energy of a photon (a wave) is its frequency in time. That's because that defines how much the photon is changing as it goes down the time dimension of space-time. The change of a photon, and the energy of a photon, mean the same thing. Gamma rays are changing much more than radio waves (so again, they have more energy). No matter where you look, energy always means change. Thanks for listening. ;)
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