Algol's brightness variations are not due to some special quality of a single star.

大陵五的亮度变化的原因不是由于星体物质特殊。

youdao

Repetitive voltage fluctuations cause brightness variations in incandescent elements.

反复的电压波动引起白炽灯光度的变化。

youdao

Recently a detailed analysis of microlensing system OGLE-2006-BLG-109 has related brightness variations to two planets that are similar to Jupiter and Saturn of our own Solar system.

近年来，针对微重力透镜系统OGLE - 2006 - BLG - 109进行较详细的分析显示，部份亮度的变化是由两个类似木星及土星的行星所造成的。

youdao

The technology, which works by measuring brightness variations in your face, does not require special hardware.

ENGADGET

By analyzing measurements of 1207 RR Lyrae stars taken by the Catalina Mount Lemmon Telescope in Tucson, the team was able to observe dramatic brightness variations in these stars, taking place over periods as short as half a day.

FORBES: Astronomers Confirm Milky Way's Most Distant Stellar Stream

Observations made in Europe have failed to see any variations in brightness that might be expected from a slowly spinning metallic object.

BBC: New 'moon' found around Earth