Through an infrared thermal imaging camera?
2007-08-20 09:32:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Hint: It reads the temperature on the surface of what it sees.
The hottest spot on the image is where the stream contacts the water in the jug.
2007-08-20 09:57:55 · update #1
When the photo was taken, the hot water was turned on and left on for about 3 minutes. So in other words, the water coming out of the faucet should be hotter than the water in the jug.
2007-08-20 09:59:29 · update #2
Try to visualize a cross-sectional view of the water stream as it runs from the faucet to the jug.
2007-08-20 10:48:59 · update #3
Two possibles:
1. The stream surface is cooling more rapidly due to velocity than the surface in the pitcher and the hotter infrared (IR) emission from the core is partly absorbed by the outer layer. And the rest of the pitcher contents is behind the wall of the pitcher itself so more IR is absorbed.
2. A larger source (than the faucet head or the stream) shows up hotter because of resolution limitations of the camera.
2007-08-20 10:45:19 · answer #1 · answered by kirchwey 7 · 2⤊ 0⤋
I am guessing you mean the avatar pic.
It is hard to tell since it is so small but it looks to be a running faucet. The hot areas are the water or the hot areas of the faucet that warmed up due to the water.
2007-08-20 09:48:44 · answer #2 · answered by me 3 · 0⤊ 0⤋
Friction between the stream and the water surface
2007-08-20 10:10:33 · answer #3 · answered by Adam D 2 · 0⤊ 0⤋