RE: Bright Lights in the Night16 May 2020 13:05
Strudel, i'm no expert in tape, but it's something I found out back in my A level days back 45 odd years ago... Scotch tape should have those same properties as sellotape, eg polarising .
I believe this is to do with the extrusion process of making the plastic part of the tape stretching the polymers lengthways !
Dont have much info as to how you would use sellotapes properties in everyday use, but always good for demonstrating to kids etc.
Try looking through tape/sunglasses through a car windscreen and turn it 90 degrees and you'll see the polarisation!
In Australia, sellotape is called Durex !
Apologies for the off topic trivia, but just having a bit of fun !