sunspots

1. Dark spots on the surface of the sun caused by magnetic storms .

Notes

The number of sunspots goes through a maximum and minimum about every eleven years. During periods of maximum sunspots, the elementary particles associated with the spots cause disturbances in the atmosphere of the Earth and interfere with radio and television communication.

Example Sentences

That seems to be what happens on a large scale when sunspots are numerous.

From Project Gutenberg

As to the number of sunspots, there is little evidence previous to about 1750.

From Project Gutenberg

The result of the comparison of earthquakes and sunspots is shown in Table 7.

From Project Gutenberg

Of course anything is believable when a definite physical connexion has been demonstrated, for example the influence of sunspots.

From Project Gutenberg

Another large group of investigators have shown that atmospheric pressure also varies in harmony with the number of sunspots.

From Project Gutenberg