Thinking @ Speed of Light

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.   ...

I was getting a bit annoyed trying to explain a few people (you know who you are) that the iPhone camera is not different from their phone cameras (also having a 5MP sensor) and that with just a bit of hard-work they can also get HDR pictures. All u need is an app that does that for you ... Ok fine for all the people who do not want to install an app on their phone or want to create HDR using a normal "Digi-cam" there is another way. You can use Photoshop (or GIMP for you Open Source freaks) and make yourself a an HDR image. The process is fairly simple but this post is just for the above mentioned people and for all the others who are oblivious to the fact that this can actually be done. So is what u need :              1) A camera that has adjustable exposure settings               2) Photoshop or GIMP (why did they have to name it that?)          ...