Just a side note all these images were taken with my iPhone and therefore the quality isn't very good at times. Due to lighting and the close up shots.
simple LED test with a 3V watch battery - lowest quality LED
simple LED test with a 3V watch battery - medium quality LED - relatively brighter than the lowest quality LED
testing both LED's in a hole in cardboard - 2nd LED a lot brighter and more effective
LED test with paper - shines through no difference how far away the paper is - higher quality LED would be brighter
with the plier I experimented how easily it is to leave marks on plywood - it is quite a soft material
these are the same type of LED's - the first one was connected for a bit to a 9V battery which then started to dim - to check its still working I connected it to a 3V with a lower brightness
with modelling clay I made a flat and thin object and held it against the brightest LED I have - it shines through effectively well whereas you would think it wouldn't as it isn't see through
LED with a 9V battery - the higher voltage definitely dims the LED a lot
wetting the plywood when cutting gives you a better resolution and cleaner cut - it also helps it stay flat
attacking LED with a plier - with the cutting edge it cut straight through - wasn't very easy though
bending modelling clay - the thinner end was a lot easier to bend as the thicker end - the form springs back to its initial form rather quickly
painted LED's
LED through 4mm plywood
LED sand papered
LED dipped in nail polish remover for an hour - no change to light
playing with the LED and a spiral shaped piece of plastic
playing with the LED and a spiral shaped piece of plastic - variation 2
different light direction - source from the outside
LED inside a cone out of aluminium foil
aluminium foil cone shape
triangle shaped object
LED inside a rounded shaped object - plastic is from a milk bottle
taking away layers - LED shines dimly through
cutting a slice into plywood - light does not shine through anywhere else but the slice
taking away layers - closest to the edge brightest
see the change of brightness through the different layers.
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