4 ms·
Low-Tech Camera Uses No-Tech Gravity to Drop Viewers Into the Pool
- mattmaroon 18y agoPretty neat. Technically things all fall at the same rate in a vacuum, but will vary slightly due to air resistance. I wonder if the camera was designed at all to have similar aerodynamics to a diver, or if the probably tiny difference is just easily accounted for by the pan and tilt.
- stcredzero 18y agoOnce they're done with the tumbling, divers are minimizing their drag. I'd be surprised if they actually got to terminal velocity by the time they hit the water. Drag increases roughly with the square of the velocity. If they are nowhere near their terminal velocity, the effect of drag is going to be pretty low for most of their fall. If the divecam's terminal velocity is also suitably high, then the difference in acceleration won't be very much in the first several seconds. IIRC, terminal velocity of someone trying to be streamlined is over 120 mph. 9.8 meters per second square is about 22 miles per hour. Drag is going to rear it's head in a big way only after 5 or 6 seconds. By the time drag force starts to really shoot up, the divers have already hit the water. Okay, I just Googled terminal velocity. We should probably expect 160-200 mph terminal velocity for an Olympic diver. http://hypertextbook.com/facts/JianHuang.shtml http://hypertextbook.com/facts/JianHuang.shtml (For those with access to dive video, who want to check my reasoning out, remember to start counting seconds only after the divers start going down!)
- stcredzero 18y agoWhen I was an undergraduate, an adjunct professor in film did something like this, to film a point-of-view shot for a character falling to their death. It involved, a rope, a camera, a pulley, and some work gloves. Very effective, but low tech.