English translation for "光变周期"

period of light variation

Example Sentences:

	1.	Well , you may ask : how can we determine the luminosity - period relation 但你可能会问：我们怎样得知造父变星的光变周期光度关系？
	2.	Their periods , in the range of a few days to a few months , have a definite relation with the luminosities 最特别的是，它们的光变周期和光度有直接的关系，周期越长，亮度越大。
	3.	Subsequently astronomers found more and more cepheids in different corners of the universe and discovered that there exists a simple relationship between their luminosities and light variation periods 其后的天文学家在宇宙不同角落陆续找到其他造父变星，并发现了它们光度跟光变周期间的简单关系。
	4.	This usually means that we find out the relation using stars near us , then apply the relation to greater distances . in general , we use accurately determined distance indicators for small distance to calibrate distance indicators for greater distances 事实上，科学家首先找一些离我们较近的造父变星，找出它们的光变周期与光度的关系，然后假设这个关系对遥远的同类变星依然适用。
	5.	We have to use some other methods to measure the luminosity or equivalently the absolute magnitude of the cepheid variable . since we can readily measure the apparent magnitude of a cepheid variable , to measure the luminosity means measuring the distance . we use some distance measurement methods , for example , parallax , to determine the relation 要弄清这个关系，我们要知道不同造父变星的光度和光变周期数据，量度光变周期当然不是问题，但要得知一颗恒星的光度，我们首先要得知它的距离，这时便须借助好像视差法等其他量度天体距离的方法。

Similar Words：

"光变应性" English translation, "光变应性的,对光过敏的" English translation, "光变应性反应" English translation, "光变应性接触性皮炎" English translation, "光变应性药物疹" English translation, "光变阻器" English translation, "光标" English translation, "光标不见了" English translation, "光标菜单" English translation, "光标操纵轮" English translation