The Method to Measure Temperature of The Star
How can astronomers measure the temperature of a star?The questions often makes we think, it is remember the distance between star with Earth is very far, especially human ability is limited. Until now, human is not able yet to make plane that it can land on one star of universe’s inhabitant. Although astronomers using big telescope in observing a star, but the star observed is only seen as point of weak light.
Astronomers measure the temperature of the star by using big telescope, because the larger telescope the larger its power of magnification. Star can be photographed by using telescope, the light of the star is gathered by lens in its focus that is completed by film. Eventhough it has been magnified by complete device, often the light received by telescope is still weak, then required longer time for photography. For it can be learned carefully, the light of the star is refracted by prism, the refracted light is called spectrum.
The decomposition of light through the glass prism becomes spectrum is very important in determining temperature of a star, because large or small of star’s temperature can be observed through the decomposition of light color of that star. So the color of the star can be made reference to determine degree of high and low of star’s temperature.
For example, star that has red color is usually its temperature is less hot, on the contrary yellow color means hot and bluish white color is hotter than the colors of red and yellow. So astronomers, in determining the temperature of a star, they do not only use telescope, but they use measuring device and make calculation by using computer.
Base on its volume, the star in universe is divided into three kinds those are giant star, medium star and dwarf star.
How can astronomers measure the temperature of a star?The questions often makes we think, it is remember the distance between star with Earth is very far, especially human ability is limited. Until now, human is not able yet to make plane that it can land on one star of universe’s inhabitant. Although astronomers using big telescope in observing a star, but the star observed is only seen as point of weak light.
Astronomers measure the temperature of the star by using big telescope, because the larger telescope the larger its power of magnification. Star can be photographed by using telescope, the light of the star is gathered by lens in its focus that is completed by film. Eventhough it has been magnified by complete device, often the light received by telescope is still weak, then required longer time for photography. For it can be learned carefully, the light of the star is refracted by prism, the refracted light is called spectrum.
For example, star that has red color is usually its temperature is less hot, on the contrary yellow color means hot and bluish white color is hotter than the colors of red and yellow. So astronomers, in determining the temperature of a star, they do not only use telescope, but they use measuring device and make calculation by using computer.
Base on its volume, the star in universe is divided into three kinds those are giant star, medium star and dwarf star.
No comments:
Post a Comment
Please comment politely on this blog, learning and study geography