fun fact: Sam warming his hands wasn’t in the script. Before they shot this scene the director was talking to Jared and mentioned that it was a cold night. Jared thought the director was telling him to show that it was cold out, so he did this
Thanks in part to an anonymous $250,000 gift, Penn’s School of Engineering and Applied Science has opened the AddLab, a new facility that will feature a suite of state-of-the-art 3-D printing tools. The “add” in AddLab is for “additive manufacturing,” a catch-all term that encompasses the different techniques now available for making three-dimensional objects by building them layer by layer.
Sticking tape on a frosted glass makes it see through. Air and glass have a very different refractive index, so if you have a rough glass surface, the incoming light is scattered in all directions, thus blurring the image you see through it.
Tape has a similar refractive index as glass, so if you stick it to frosted glass, the sticky material will fill out the little bumps in the glass. The non-sticky side is practically flat, so by sticking tape to the frosted side of glass that’s frosted on one side, you are essentially making it flat again, and making the glass clear.