Faraday Flashlights aka Shake Flashlights
Bought a shake flashlight from Night Star... It works quite well, except the fact that LEDs only work efficiently at close ranges... Otherwise, shake flashlights could really save quite a number of batteries used. Especially if you're looking for a torch that serves only when there's power failure in your house... Other than its only for close range, the other problem will be the size of the torch liao... Quite bulky for a torch like that...
Fascinating Nature - The Night Sky.
Interesting Fact - Planets exists.
Fascinating Nature + Interesting Fact = Astronomy
Interesting Fact - Planets exists.
Fascinating Nature + Interesting Fact = Astronomy
http://www.singastro.org/viewtopic.php?t=4273
I am selling one with nice case, 2 EPs, barlow and 4 colour filter for S$130. This flashlight has lens to focus the beam... Just to test it, I shake it lightly for 1min and the red light last about 3min+. All item are new in box.
I am selling one with nice case, 2 EPs, barlow and 4 colour filter for S$130. This flashlight has lens to focus the beam... Just to test it, I shake it lightly for 1min and the red light last about 3min+. All item are new in box.