Yeah, I made a Dermatoscope for my cell phone. Put the stretched scotch tape over the flash, then used a couple of old 3D glasses for the circular polarizer over the lens and BAM! The vascular patterns of the skin, for less than $1.
Dermatoscopes go for as high as $1000 as medical equipment.
This is interesting!!! I will see if i can make a polarizer with scotch tape ;)
Btw scotch tape now sounds so special to me XDD it can even generate x ray under vacuum when you peal it(and the result was published in Nature)
I know! example: Pencil and Scotch tape. Later some electron microscope. You find Graphene flakes. BAM! Nobel prize.
oh yes!!! the graphene as well XDDD
Scotch tape is really crazy XDDDD