Heyday vs Apogee - What's the difference?
heyday | apogee |
A period of success, popularity, or power; prime.
A lively greeting.
* 1798 :"Heyday, Miss Morland!" said he. "What is the meaning of this? I thought you and I were to dance together." Jane Austen - Northanger Abbey
(obsolete) An expression of frolic and exultation, and sometimes of wonder.
* 1600 :"Come follow me, my wags, and say, as I say. There's no riches but in rags; hey day, hey day, &c." Ben Jonson - Cynthia's Revels
(astronomy) The point, in an orbit about the Earth, that is furthest from the Earth: the apoapsis of an Earth orbiter.
(astronomy, more generally) The point, in an orbit about any planet, that is farthest from the planet: the apoapsis of any satellite.
* 1995 , John H. Rogers, The Giant Planet Jupiter , Cambridge University Press, ISBN 978-0-521-41008-3,
* 2002 , Serge Brunier, Solar System Voyage , Cambridge University Press, ISBN 978-0-521-80724-1,
* 2010 , Ruth Walker and Mary M. Shaffrey et al., Exploring Space: The High Frontier , Jones & Bartlett Learning, ISBN 978-0-7637-8961-9,
(possibly, archaic, outside, astrology) The point, in any trajectory of an object in space, where it is furthest from the Earth.
(figuratively) The highest point.
* 2004 March 22, :
* '>citation
As nouns the difference between heyday and apogee
is that heyday is a period of success, popularity, or power; prime while apogee is apogee (a point in an orbit around the earth).As an interjection heyday
is a lively greeting.heyday
English
Noun
(en noun)- The early twentieth century was the heyday of the steam locomotive.
Synonyms
* (l)Interjection
(en interjection)References
apogee
English
Noun
(en noun)page 335:
- Conjunctions of I and II [Io and Europa] occur when they are near perigee and apogee respectively; conjunctions of II and III [Europa and Ganymede] occur when II [Europa] is near perigee.
page 36:
- The resolution of the images obtained by this American probe [Messenger] will depend on its altitude [above Mercury] at any one time: about ten meters at perigee (200km altitude), but only one 1 km at apogee (15000km).
page 129:
- [Nereid’s] apogee —farthest point from Neptune—is five times the distance of its perigee—its closest point.
- The cult of the chief executive reached its apogee in the nineteen-nineties, a period when C.E.O.s seemed not so much to serve their companies as to embody them.
