I have a door at the front of the room, and am trying to project the image outside to the back of the room. However, just inside the door there is a small side wall. The light seems to be shining here (in full colour), and I can use a magnifying glass to focus on objects from the outside...
Hi guys, I have an optics question. I am running an activity for kids to simulate being inside a camera. So I am in a dark room, and I have a small hole in one of the doors which allows light in. An image comes in through the hole, and a magnifying glass can be used to focus this image, which...
Hi,
I am trying to get a plot of the sound's magnitude vs. frequency. I have managed to read in a wav file as a matrix. I then compute the fft of this matrix. When I plot the absolute value of this, I get a symmetric plot with peaks at the start and the end. What is this a plot of? Is it...