The camera obscura is a old, old project which illuminates the nature of light. Students can discover some major scientific principles: light travels in straight lines, transparent surfaces allow light to travel through while translucent surfaces let some light through, the principles behind photography, scale, proportion and a whole host of other things.
Essentially, a camera obscura is a black box with a very small hole piercing one wall. This hole allows a small amount of light to enter the box.
Now here’s where it gets funky. We need to know two rules about light to understand what happens next. First, light travels in a straight line. Second, light reflects off all objects – it’s the reflected light which our eyes process into visual images. So what happens if light is made to travel through a extremely small space?
In my second period this semester, I’m moonlighting as a video producer. I don’t get to do any fancy music videos or full-feature movies, but I do get to make a documentary. We’ve got the backdrop ordered, the lights rigged up and a the interview stool picked out. I even have a low-slung directors chair that I talk to when its empty. I pretend my boss is sitting there. In the woodshop, I made this little rig to support my students. This is just a prototype. I’ll be working on a second rig which will find a permanent home in … Continue reading This Week in the Classroom (and the shop): Time Lapse Photography or Filming Rigs
My school is undergoing a little bit of construction…and by a little bit, I mean a cool of five mil of construction. We just needed a little documentation of the facts. I’m going to use this photography stand (and yes, I walked around with my shirt like that all day)… I put a 1/4 coarse threaded bolt through a board, flipped it around and stuck it into the post. You can see the crossbeams at the bottom giving the piece a little stability. …and the results are pretty spectacular. Make it safe & keep the rubberside down this week. Remember … Continue reading This Week in the Classroom: The Poor Man’s Tripod (For Taking Panoramic Outdoor Pictures)