DIY Polariscope
A few days ago I was stuck in one of those YouTube loops (happens once a month) and I came across this awesome video on the Prince Rupert's Drop by SmarterEveryDay (Excellent channel BTW). About 3:00 minutes into the video they use something called a Polariscope to check out the stresses built up inside the Prince Rupert's Drop. Watching that I realized that I had all the things needed to build this at home. You need the following things for creating a Polariscope : 1) A polarized light source (White in color preferably) - Since almost all LCD's use polarized light to display images you could use your iPad or Laptop screen displaying a white image. I went for my 22" monitor as I needed a bigger surface. 2) A transparent object - Not all objects work well for this as some don't really have that much stress. - Things that work well - Glass statues, use and throw forks and knives, glue sticks, etc. ...