Relationship To Physical Units
The surface brightness in magnitude units is related to the surface brightness in physical units of solar luminosity per square parsec by
where and are the absolute magnitude and the luminosity of the Sun in chosen color-band respectively.
Read more about this topic: Surface Brightness
Famous quotes containing the words relationship, physical and/or units:
“Harvey: Oh, you kids these days, I’m telling you. You think the only relationship a man and a woman can have is a romantic one.
Gil: That sure is what we think. You got something better?
Harvey: Oh, romance is very nice. A good thing for youngsters like you, but Helene and I have found something we think is more appropriate to our stage of life—companionship.
Gil: Companionship? I’ve got a flea-bitten old hound at home who’ll give me that.”
—Tom Waldman (d. 1985)
“How many young hearts have revealed the fact that what they had been trained to imagine the highest earthly felicity was but the beginning of care, disappointment, and sorrow, and often led to the extremity of mental and physical suffering.”
—Catherine E. Beecher (1800–1878)
“Even in harmonious families there is this double life: the group life, which is the one we can observe in our neighbour’s household, and, underneath, another—secret and passionate and intense—which is the real life that stamps the faces and gives character to the voices of our friends. Always in his mind each member of these social units is escaping, running away, trying to break the net which circumstances and his own affections have woven about him.”
—Willa Cather (1873–1947)