From website:
http://www.rp-photonics.com/dispersion.html
Normal and Anomalous Dispersion
One distinguishes normal dispersion (for k'' > 0) and anomalous dispersion (for k'' < 0). Normal dispersion usually occurs for transparent media in the visible spectral region. Great care is recommended...
Induction currents are generated by changes in magnetic flux. Magnetic flux is equal to the surface integral of B.da (<-- dot product). The direction of the new (local) current will be that which opposes a change of magnetic flux. The E and B fields created by this new current will obey all...
I think that would depend very much on the physical characteristics of your two pine samples. How smoothe they are, the moisture in the air... I think you'd have to measure the coefficient for your specific setup. If this is purely theoretical, you could probably use the value for wood on...
There isn't any air in space. There's nothing to flow down the tube from space.
Also, the same principles that keep the atmosphere from going into space will stop air from flowing up the tube.
To take advantage of temperature difference, you would probably want to look at the...