fuckyeahphysica:Can a fire cast a shadow?There doesn’t seem to be a shadow casted on the wall in the
fuckyeahphysica:Can a fire cast a shadow?There doesn’t seem to be a shadow casted on the wall in the above image of a burning matchstick. So, does that mean that fires don’t cast shadows at all?One common argument that follows is:Fire is a source of light, hence cannot cast a shadowBut, that arguments falls apart, when you realize that:Sure, fire is a source of light but it is not the brightest SourceFire could cast a shadow, if the light source behind the fire was brighter than the flame itself.You can simply use an iPhone’s flashlight and a lighter. The LED from the iphone is just powerful enough to begin to make a shadow from the flame. SourceGo ahead, try it! Have fun!** Food for thought :Why does this phenomenon occur when the light source behind the flame is brighter ? I could reveal the answer, but Its even better when you think about it and comprehend it for yourself. Wouldn’t want to deprive you of that excitement , now would I ? -- source link
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