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Dec
16
awarded  Yearling
Oct
3
comment How does carbon dioxide or water vapour absorb thermal infra red radiation from the sun?
Wow. This is over 4 years old. Anyway, what it adds is essentially a statement that these molecules absorb the wavelengths they absorb because it is an intrinsic property, dictated by the laws of the universe in which we live.
Jul
24
awarded  Good Answer
May
13
comment Looking for the curve traced by a moving bicycle when its steering bar is fully rotated
Yes, in which case the rear would be forced to slip over the ground, unless you treat the contact patch as an ideal point contact.
Jan
19
comment Does Combining Lasers Add to Their Power?
What about it? I'm not sure what relevance that has here.
Jan
11
comment How can airplanes fly upside down?
Except that that's not quite true.
Dec
16
awarded  Yearling
Dec
10
awarded  Excavator
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Sep
19
awarded  Nice Answer
Jul
14
comment Turbine like device in space spinning with KE and converting to Watts. Acceleration is constant?
Do you understand that any mechanism you use to draw energy from the turbine will produce a force slowing the turbine down? If you're not drawing energy from the turbine, but you are providing energy input then yes, it will accelerate forever.
Jun
24
comment Accelerometer problem - difficulty understanding my readout
The accelerometer rotates with the wheel, right?
May
30
awarded  Nice Answer
May
1
reviewed Approve How hot does the upstairs need to be before it will heat the basement through convection?
Apr
19
comment Fraunhofer Diffraction using lenses
I find it odd that you're in a situation where somebody is asking you about Fraunhofer diffraction when your total knowledge of lenses is that they "magnify images". Are you taking a class that you haven't taken prerequisites for?
Mar
20
comment How can KVL & KCL be derived from Maxwell equations?
You can't, because it isn't.
Mar
18
comment How can KVL & KCL be derived from Maxwell equations?
For a rough estimate of the scale of the problem, you could take the speed of light divided by the length scale of your apparatus. That will give you a frequency scale for the problem. Frequencies significantly smaller than that scale can be approximated as static fields.
Mar
18
comment How can KVL & KCL be derived from Maxwell equations?
Maybe you aren't familiar with the practice in the physical sciences of making approximations. A law that holds under some conditions will (often) hold approximately when those conditions are only approximately satisfied. What qualifies as a sufficiently close approximation depends on the scale of the system in question. For electromagnetic devices of reasonable size, "slowly varying" can mean quite rapid variation.
Mar
16
comment How can KVL & KCL be derived from Maxwell equations?
Yes, as Ali said.