On Apr 2, 4:05*pm, "Szczepan Bialek" wrote:
napisal w ...
On Apr 2, 7:48 am, "Szczepan Bialek" wrote:



"Jim Lux" napisal w
...

Szczepan Bialek wrote:

"The Earth is constantly immersed in the solar wind, a rarefied flow of
hot plasma (gas of free electrons and positive ions) emitted by the Sun
in all directions, a result of the two-million-degree heat of the Sun's
outermost layer, the corona. The solar wind usually reaches Earth with
a
velocity around 400 km/s, density around 5 ions/cm3 and magnetic field
intensity around 2-5 nT (nanoteslas; Earth's surface field is typically
30,000-50,000 nT). These are typical values. During magnetic storms, in
particular, flows can be several times faster; the interplanetary
magnetic field (IMF) may also be much stronger."

Sure... the number density of ionized particles is somewhat bigger than
the 5/cc you describe above, so solar wind is actually not a big
contributor to it. Most of the ionization comes from UV ionizing the air
atoms/molecules. (that's what the whole daytime sky wave off the F layer
is all about, after all.. working Australia from the California on 20
meters at 5AM CA time probably isn't a good bet)

In space is also the dust. The ionized particles can come from them also.
The Moon is a big dust.

The aurora is NOT caused by acoustic waves.

" In the explosive event that a coronal mass ejection (CME) is reported
it's time to hop into action because this super-charged solar wind is
traveling fast (maybe 3-to-5 million miles per hour). When this energy
sweeps by the earth 1-to-3 nights later there is a very good chance of
aurora activity". From: *http://aurorahunter.com/aurora-prediction..php

That's not acoustic. That's just particles streaming out into space, and
because there's not many other particles to bump into, most of them get
to
Earth

Cars produce the hot wind (exhaust pipe) with the acoustic waves. Is
possible to produce only streaming?
There must be the oscillatory flow.
S*

you produce hot wind also...

But also with nois.

you should learn to listen and get into this century. *no, the solar wind
is not oscillatory,

Yes. But if no the sunspost (explosions).

it flows from the sun all the way past pluto. *it also varies in speed
quite a bit
so if the light was being propagated by the particles in the solar
wind we would see large changes in the velocity and intensity coming
from the sun that would be very easy to measure

Good idea. Have you a procedure for such measurements. But the changes are
rather small.

, and would likely have killed off all life long ago.

The changes makes auroras only.
S*

no, the changes don't always make aurora, and they are definately NOT
small. watch the speed on this for a few months, even without aurora
and see how much it changes. if the waves were traveling on the
charged particles then they would change speed just as much:
http://www.swpc.noaa.gov/ace/MAG_SWEPAM_24h.html