Aura vs. Radiance — What's the Difference?

An invisible emanation or field of energy believed to radiate from a person or object.

In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area. Spectral radiance is the radiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength.

A distinctive but intangible quality that seems to surround a person or thing; an atmosphere

The quality or state of being radiant.

(Medicine) A sensation, as of a cold breeze or a bright light, that precedes the onset of certain disorders, such as an epileptic seizure or an attack of migraine.

(Physics) The radiant energy emitted per unit time in a specified direction by a unit area of an emitting surface.

Distinctive atmosphere or quality associated with something.

The quality of being radiant, shining, bright or splendid.

(parapsychology) An invisible force surrounding a living creature.

(physics) The flux of radiation emitted per unit solid angle in a given direction by a unit area of a source.

(medicine) Perceptual disturbance experienced by some migraine sufferers before a migraine headache.

The quality of being radiant; brilliancy; effulgence; vivid brightness; as, the radiance of the sun.

(medicine) Telltale sensation experienced by some people with epilepsy before a seizure.

The amount of electromagnetic radiation leaving or arriving at a point on a surface

Any subtile, invisible emanation, effluvium, or exhalation from a substance, as the aroma of flowers, the odor of the blood, a supposed fertilizing emanation from the pollen of flowers, etc.

The quality of being bright and sending out rays of light

The peculiar sensation, as of a light vapor, or cold air, rising from the trunk or limbs towards the head, a premonitory symptom of epilepsy or hysterics.

An attractive combination of good health and happiness;

A sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure

An indication of radiant light drawn around the head of a saint

A distinctive but intangible quality surrounding a person or thing;