Decided this week I'd try my hand at some time-lapse photography. The first thing I had to do was find out how long it would take an ice cube to melt at room temperature. Turned out to be roughly an hour and a half. Then, I had to do some math. I knew I wanted a 30 second duration at 10 frames per second. So, this gives me how many images I would need (30 seconds x 10 frames per second = 300 images). Next, I figured the total melting time in seconds (1.5 hours = 90 minutes x 60 seconds = 5,400 seconds). Then, I divided the time in seconds by the required number of images (5,400 / 300 = 18 seconds). This tells me I need the camera to take a shot every 18 seconds. So, I set the camera on a tripod, used my remote shutter release to set up the timer, and went to edit some photos from a family shoot for the next hour and a half. When it came close to the time being over, I noticed that the ice cube hadn't completely melted. So, I quickly reset the timer and let it continue to shoot until the cube was gone. This is why the video ended up being 40 seconds instead of the 30 I had originally planned on.