3 ms·
Cool Physics: Visualizing microwaves in a microwave oven
- jonhendry 16y agoNeat, but it would have been better if he'd not used the carousel.
- deleted 16y ago[deleted]
- gchakrab 16y agoyea, that kind of made things a little more difficult, but I suppose it's realistic to actual conditions
- jonhendry 16y agoHard to really see what the microwaves are doing, though. Ideally I suppose you'd want to film it with the array in various z-positions from the rear to the front, then composite all the versions together, perhaps with each version given a color overlay 'in post' to keep them distinct. Probably want to disable the microwave's interior light, and have the microwaved bulbs be the only source of light.
- baddox 16y agoI think the carousel was the whole point: it gives us a three dimensional impression of the microwave intensity in the entire cube of the oven.
- TheNewAndy 16y agoI've seen this done with a 3d lattice of marshmallows connected with toothpicks. It was done without the carousel, so the finished product gives you a nice 3d model of where the microwaves are.
- huhtenberg 16y agoBlogspam. Here's a proper link - http://kossover.squarespace.com/journal/2010/11/12/seeing-where-the-microwaves-are.html http://kossover.squarespace.com/journal/2010/11/12/seeing-wh... - and it mentions that he borrowed the idea from http://www.youtube.com/watch?v=mcEYvkvfWE8 http://www.youtube.com/watch?v=mcEYvkvfWE8, which appears to be exactly same setup sans the narration.
- dschobel 16y agoAnother neat microwave physics experiment if you have kids, measure the speed of light with a microwave + chocolate bar: http://www.wired.com/geekdad/2010/02/leftover-valentines-chocolate-use-it-to-measure-the-speed-of-light/ http://www.wired.com/geekdad/2010/02/leftover-valentines-cho...
- joe_bleau 16y agoI've seen it done with thermal fax paper and graphite pencil marks.
- vanschelven 16y agoIf you're going to try this at home you should be aware of the dangers of putting water in a clean glass in a microwave oven: http://www.fda.gov/Radiation-EmittingProducts/ResourcesforYouRadiationEmittingProducts/Consumers/ucm142616.htm#10 http://www.fda.gov/Radiation-EmittingProducts/ResourcesforYo...
- Jach 16y agoNote that it's mostly distilled water you should worry about: http://www.youtube.com/watch?v=1_OXM4mr_i0 http://www.youtube.com/watch?v=1_OXM4mr_i0 (Mythbusters exploring it)
- electromagnetic 16y agoIt's simple to avoid if you're not intending to drink the glass of water, simply drop a toothpick in - break it if you want to be extra sure. The toothpick has a rough surface, if you break it then you're making an exceptionally rough nucleation point between the jarred fibers. IIRC it's not so much a clean glass as a polished glass. If it's a regular cheap ass glass then it has enough imperfections that it's unlikely to ever happen with tap water. However polished glass (where the inside is actually sanded/polished smooth to remove imperfections) is the dangerous one, especially with distilled water (why anyone would drink distilled I don't know) or I suppose even filtered water would increase the risk exponentially compared to tap that can contain sediments from pipe scum.
- meatsock 16y agowhat's the black bar 2/3rds of the way up?