(chiefly Britain, dialectal) present participle of bright

plural of intrinsic brightness

The brightness a star would have if not attenuated by distance or intervening gas or dust. As opposed to apparent brightness which it has as measured at a distance.

plural of apparent brightness

(astronomy) The brightness of a star as measured by an observer, as opposed to its intrinsic brightness when corrected for distance or absorption.

Synonym of Tomb Sweeping Day

(astronomy) That emits significant amounts of radio waves; radio-luminous

Used to describe the most common form of optical microscopy in which light is transmitted through the sample which appears on a bright background

An uncoated nail, susceptible to rust and corrosion, not used for exterior work.

(colloquial, often ironic) A person who is intelligent, clever or quick-witted.