pierre janssen meaning in Chinese

皮埃尔・詹逊
皮埃詹

If you have knowledge in simple image processing , you may reduce the noise further by taking many exposure on the same object , and stack them together in computer . after gaining some experience , you many want to take close - up photos of clusters and nebula . since the magnifying and light collecting power of the camera lens is not enough , you have to connect the camera to a telescope
在1868年，法国天文学家pierre janssen发现了在太阳的光谱中，有一条奇怪的光谱线，起初科学家以为这是一种地球上并不存在的物质所造成的，所以把这种新物质命名为氦英文为helium ，这个字来自希腊语的helio ，意思即为太阳。