|
Today you can find electric lights of virtually every design and brightness. Although these lights may all seem different, there are really only two types: ... Fluorescent lights (the long glass tubes) contain a kind of gas that glows when electricity passes through the tube. ... Incandescent lights (the kind found in most homes,
|
www.mercury.co.nz/education/education_projects_flashlig...
www.mercury.co.nz/education/education_projects_flashlight.asp
|
|
|
|
|
|
|
|
This cool astronomer's LED flashlight is really two flashlights in one. There are two power switches, each controlling an LED. An LED is a light emitting diode, which is an electronic device that requires very little current to run, so the batteries last a very long time.
|
www.sciencehound.com/science_project_community/node/167...
www.sciencehound.com/science_project_community/node/1679/print
|
|
|
Um with lcd flashlight? Don't you mean LED flashlight? Easy there is a couple with of doing this easy way you make a flashlight with x amount of LED then to dim you turn off some of the LEDS. Or the other way to build some sort of circuit that will dim your LED. ... Is there a way to build a flashlight spy cam?
|
www.instructables.com/answers/how_do_you_build_a_lcd_fl...
www.instructables.com/answers/how_do_you_build_a_lcd_flashlight_with_variable_br/
|
|
Find the best deals on "Build Your Own Flashlight" by Jim Becker, Andy Mayer (1561387061) ... ISBN 1561387061 / 9781561387069 / 1-56138-706-1 ... Publisher Running Pr Book Pub...
|
www.bookfinder.com/dir/i/Build_Your_Own_Flashlight/1561...
www.bookfinder.com/dir/i/Build_Your_Own_Flashlight/1561387061/
|
|
This video is really cool. ... How to build a USB flashlight. watch! ... It shows you how to build a USB flashlight with basic stuff you have around the house. When ever I open up my computer to do work I have to hunt around for a light. With this little flashlight you just plug it into the USB and you have light.
|
digg.com/educational/How_to_build_a_USB_flashlight
digg.com/educational/How_to_build_a_USB_flashlight
|
|
See the NEW and IMPROVED LED flashlight Junior! ... LEDs are more reliable, durable, and last longer than regular flashlight bulbs. They have a lifetime of 100,000 hours where a light bulb is much less than 100 hours. LEDs do not have a delicate filament to break like a light bulb.
|
www.e-scoutcraft.com/film_can/led_flashlight.html
www.e-scoutcraft.com/film_can/led_flashlight.html
|
|
Now, build the flashlight as you've designed it. You'll need to find a way to connect the circuit so that the electricity flows through the battery and the bulb. You'll also need to build a switch that turns the flashlight on and off.
|
pbskids.org/zoom/activities/sci/flashlight.html
pbskids.org/zoom/activities/sci/flashlight.html
|
|
