It was the middle of the sunspot cycle (which I knew nothing of) and propagation must have been exceptionally good.
Thousands of successful contacts were made as it was the beginning of sunspot cycle 16, a very good one as old timers will know.
But sunspotcycle 20, which was a good one, had decided otherwise.
Titanium and oxygen, too hot to combine in most regions of the sun, join to form the vapor of titanium oxide, characterized in the sunspot spectrum by fluted bands, made up of hundreds of regularly spaced lines.
Moreover, when the effects of Jupiter, Saturn, and the other planets are combined, they produce a highly variable curve which has an extraordinary resemblance to the sunspot curve.
Pleistocene, might shift the main storm track poleward even more than it is shifted by the milder solar changes during the twelve-year sunspot cycle.
From January to March, when sunspot numbers averaged more than forty, the number of tropical hurricanes was 143 per cent greater than when the sunspot numbers averaged below forty.
From these and many other lines of evidence it seems probable that historic pulsations and glacial fluctuations are nothing more than sunspot cycles on a large scale.
This shows that at times of sunspot activity and hence of augmented storminess, the precipitation diminishes near the heat equator, that is, where the average temperature for the whole year is highest.
This would apparently mean that cyclonic storms would be much less numerous and less severe than during the present times of sunspot minima.
According to the planetary hypothesis of sunspots, the difference in the effect of Jupiter when it is nearest and farthest from the sun is the main factor in starting the sunspot cycle and hence the corresponding terrestrial cycle.
If the conditions which now prevail at times of sunspot minima were magnified, they would give the mild conditions of inter-glacial epochs and similar periods.
This is the type of corona seen at the time of greatest sunspot activity.
To clinch the elimination of sunspots as a cause, their record tapes showed no burst of radiation when sunspot activity had been abnormal.
They investigated the possibility of unusual sunspot activity, but sunspots had been normal during the brief periods of high radiation.
I have already suggested that extraterrestrial events, particularly the 11-year sunspot cycle, are increasingly believed to influence the atmosphere of this planet.
When the Sun is at its greatest activity, known as +the sunspot maximum+, they are found from the highest zone right down to the equator.
The last sunspot cycle had the highest maximum of any since 1780, but the present cycle bids fair to set an all time record.
It means you can only approximately predict the future course of sunspot activity.
Because the average period of solar rotation in the sunspot zone is not twenty-seven days but twenty-seven point three days.
That is, you cannot connect a particular sunspot group with a particular S-Region.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sunspot" in a variety of sentences. We hope that you will now be able to make sentences using this word.
