Installing a skylight in a room with little light or a lack of windows can now be as easy as hanging a picture, thanks to the amazing faux skylights by Simar Design. The beautiful panels can bring the ...

If you had an array of high power addressable LEDs, how would you project them onto a wall? Perhaps you’d use a Fresnel lens, or maybe an individual lens on the top of each. [Joo] faced this problem ...