Examples of aurora

• It should be noted that discrete aurora and diffuse aurora are two different phenomena.

• This is especially so in the aurora, where large fractional fluctuations of number density occur, together with strong electric fields.

• Under a vivid aurora, with a ship lying far in the distance, some gallant naval men engaged a ferocious bear on the ice.

• Its function will be to study the effects of the aurora on radio reception as part of a programme of ionospheric studies.

• Scientific results of the expedition covered meteorology, oceanography, terrestrial magnetism, glaciology, physical geography, botany, geology, paleontology, ethnology and aurora observations.

• He considered radiation pressure as accounting for comets, the solar corona, the aurora borealis, and zodiacal light.

• Arago is also fairly entitled to be regarded as having proved the long-suspected connexion between the aurora borealis and the variations of the magnetic elements.

• Energetic particles in the magnetosphere contribute to the aurora borealis and aurora australis.