Great flashlight utilizing Faraday's law of electromagnetic induction. Well-round engineering product. At 1:55 the word tasting (putting something into a mouth) had a minor letter slip, which should be tEsting (trying or checking something).
@forestpepper3621
7 жыл бұрын
The original Nightstar flashlight from the early 2000's was already a great product. The Nightstar-JP is significantly brighter. A very impressive flashlight! (I have no affiliation with the company that manufactures this flashlight. I just find it a very impressive product.) You can find more details about the Nightstar-JP at the "Applied Innotech" website.
@forestpepper3621
7 жыл бұрын
Review Comparing the Nightstar-JP flashlight With the Original Nightstar flashlight: The Nightstar-JP improves on the lighting of original Nightstar in three ways. Firstly, the Nightstar-JP illuminates a larger area, because its light beam is 18% wider. Secondly, the light of the Nightstar-JP is significantly brighter, when both flashlights have been equally charged. Thirdly, the light of the Nightstar-JP is of better quality. The Nightstar-JP creates a very uniform circle of white light on the wall. The original Nightstar light beam was less uniform, with a bluish haze in the center. More extensive observations follow. When I charge the Nightstar-JP, I find that I only move my arm about half the distance, per shake, as compared with the original Nightstar. I'm not sure how this works, but the Nightstar-JP is noticeably quieter when shaken, and perhaps this tighter construction is why less effort is required to charge it. The on/off switch of both the Nightstar-JP and the original Nightstar glow in the dark, but that of the Nightstar-JP glows much more brightly. The two flashlights have the same shape and dimensions, although the surface of the Nightstar-JP has the texture of "fogged glass", perhaps making it easier to grip than the smoother original Nightstar. The Nightstar-JP devotes more energy to creating an initially bright beam than the original Nightstar. I think the designers decided that there is little point in prolonging the glow of the flashlight once it has gotten dim. While the original Nightstar glows dimly for many hours longer than the Nightstar-JP, the original Nightstar is only practical as a flashlight for perhaps the first hour (if you don't recharge it by shaking). For about the first 8 minutes, the Nightstar-JP is noticeably brighter than the original Nightstar, using more electricity to generate this initial brightness. The following experiment was to compare these two flashlights. I waited until both flashlights had run out of energy and then charged both simultaneously, so that both got the same number of shakes. I think they each got about 550 shakes over several minutes (normally just 30 seconds of shaking yields plenty of light, but I wanted to make sure that each flashlight's capacitor was fully charged). Then I turned on both flashlights simultaneously, starting at 07:30pm. Both flashlights were pointed at a white ceiling. The white ceiling was 49 inches above the LED's of the two flahlights. ("LED" = "light emitting diode". The LED is what emits the light from these flashlights.) All observations were made by eye, in the dark, with all other lights turned off. This experiment was the 2nd time I fully charged the new Nightstar-JP. 07:30pm - The Nightstar-JP clearly has a brighter and more uniform light beam than the original Nightstar. The width of the Nightstar-JP light beam is 20-inches, while the width of the original Nightstar light beam is 17-inches. Thus the Nightstar-JP beam is 18% wider than the original Nightstar, at the same distance. There is a fairly sharp circle outside of which the light beams of both flashlights are dim. 07:38pm - Nightstar-JP now has about the same brightness as the original Nightstar. 07:41pm - The original Nightstar is now brighter than the Nightstar-JP. 07:50pm - The original Nightstar is much brighter than the Nightstar-JP. The original Nightstar is perhaps 3 or 4 times brighter than the Nightstar-JP. 08:02pm - I can still read and see the color orange at a distance of about 3-feet with the orginal Nightstar, but not with the Nightstar-JP. It is hard to see the Nightstar-JP beam next to the beam of the original Nightstar. 08:43pm - The original Nightstar beam still shows on the ceiling. The Nightstar-JP does not cast a beam on the ceiling, but its LED is still glowing. 09:55pm - The original Nightstar beam still shows on the ceiling. The Nightstar-JP has stopped shining completely. 11:15pm - The original Nightstar beam still shows on the ceiling, faintly. I can tell the beam still shows by moving my hands over the flashlight to make shadows. 09:25am (the following morning) - The LED of the original Nightstar is still glowing, but it no longer casts a beam of light. *NOTE*: This ongoing dim glow of the original Nightstar is wasted electricity that the new Nightstar-JP utilizes to make its light much brighter than the original Nightstar, when both flahlights have been charged.
@tomsocala3158
5 жыл бұрын
I have one but it says made in china at the bottom of the flashlight, wonder if its a FAKE.
@kevinle9035
4 жыл бұрын
Where can I buy it?
@skoth9500
4 жыл бұрын
AYYY TATTLETAIL FLASHLIGHT
@ConflictingForce
Жыл бұрын
minus the green, but eh it just takes some modifications anyway :)
@BunnyKip
4 ай бұрын
im here bcz tattletail!!! im gonna buy one bcz im making a irl tattletail with arduino :3
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