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What two things must an astronomer find out in order to calculate a starts absolute brightness?
Wiki User
∙ 9y ago
Three things, really. An astronomer needs to determine the apparent brightness of a star or other object, and needs to know its distance. He would also need to have an estimate about extinction - that is, how much of the light is absorbed on its way.
Wiki User
∙ 9y ago
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What is the measurement that starts with absolute zero?
Well, one measurement that is on a scale that starts with absolute zero is temperature.
Acetone C3H6O has a boiling point of 329 K Express this temperature in degrees Celsius?
K, which stands for Kelvin is an absolute temperature scale in that it starts at 0 K and 0 K is the lowest possible temperature (a.k.a. absolute zero). Absolute zero on the Celsius scale is -273.15 C. To turn any temperature in Kelvin to degrees Celsius, simply subtract 273.15, so that in your case the answer is 55.85 C.
What two factors affect how bright a star appears in the night sky?
Two factors that affect a star's apparent brightness are: 1.) The distance between the Earth and the star 2.) The absolute magnitude (the actual brightness) of the star Hope that helps :P
What is the SI unit of temperature?
The unit is the Kelvin. Zero on the Kelvin scale is the coldest possible temperature, absolute zero. The scale increases by the same degree intervals as the Celsius scale but since Kelvin starts at absolute zero, the values are all higher. For example, it is 273.15 K when it is 0°C (Celsius). Kelvin "K" It is KELVIN!!!!! Either Kelvin, or Celsius. Both are used with the SI K degreeskelvin
When you stir a liquid or gas why does it starts moving?
It's because when you stir a liquid, you are putting more mass into, therefore causing the liquid to shift, in order to accomodate the new mass.
Who is A famous astrologer whose name starts with g?
Galileo Galilei is a famous astronomer. He was an Italian astronomer. He was born in 1564 and died in 1642.
Who is the first astronomer to explain why the sun and stars move across the sky?
Galileo was the first astronomer to explain why the sun and starts travel across the sky
What does an astronomer use that starts with c?
Astronomers use a camera. It begins with the letter c.
What is the measurement that starts with absolute zero?
Well, one measurement that is on a scale that starts with absolute zero is temperature.
What are the three diffrent types of scales that mesure and teputure?
The Absolute scale (degrees Kelvin) which starts at absolute 0. The Centigrade scale that starts at the freezing point of ice. The Fahrenheit scale that starts at the freezing point of brine.
What are absolute pathnames in unix?
An absolute path name is one that starts at the root directory and navigates from there. An absolute path name can be accessed from anywhere in the system without having to navigate to it.
Famous person name that is alive or dead that starts with G?
Mikhail Gorbachev was the President of the Soviet Union. Galileo Galilei was an astronomer.
What is the unit of temperature on the kelvin scale?
The Kelvin, abbreviated K. The scale starts at absolute zero.
Is absolute temperature is same like absolute zero?
No, but they are related. Absolute zero is the coldest possible temperature. Absolute temperature is the temperature above this coldest possible temperature - i.e., how much hotter is it than the coldest theoretically possible temperature. Celsius temperature isn't absolute. It starts from the temperature of freezing water, and it needs negative numbers for anything colder than that. Fahrenheit temperature isn't absolute. It says that zero is 32 degrees colder than freezing water, and it needs negative numbers for anything colder than that. Absolute temperature starts from absolute zero. Nothing is colder than that, so absolute temperature is never a negative number.
What is an instrument used to calculate that starts with A?
The word you're looking for is... Abacus.
Which is larger an object's celsius temperature or it's kelvin temperature?
Its Kelvin temperature. The Kelvin scale starts at absolute zero and goes up. Absolute zero on the celsius scale is -273.15oC
What is the absolute value 10.7?
10.7. absolute value is always the positive of the number, whether it starts negative or positive. Ex: |10.7| = 10.7 |-10.7| = 10.7 |-5| = 5 |5|= 5
