RadioBanter - View Single Post - No antennae radiate all the power fed to them!

rickman · November 3rd 14, 07:59 PM posted to rec.radio.amateur.antenna

On 11/3/2014 1:07 PM, wrote:
rickman wrote:
On 11/2/2014 4:11 PM, wrote:
Lostgallifreyan wrote:
wrote in news
The only external heat source in space is the Sun; solution, sun shade.

Maybe not. I just did a bit of Googling for 'superconductors in space' minus
quotes. There's a lot of statements abotu space missions ended because
required helium or hydrogen coolant ran out,

Yeah, the coolent ran out for the things that GENERATE a lot of heat
and need to be cooled more than radiation can provide. Radiative cooling
does not provide for a lot of cooling.

and also of space having latent
temperatures up to 100K, so a sun shade won't help a lot there with current
materials.

There really is no such thing as temperature in space as it is a vacuum.

That is a gross oversimplification. The temperature of space is the
temperature of the background radiation, even in a near vacuum.

That is also an simplification.

But not a gross oversimplification.

--

Rick