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The unit light-year is a measure of A. brightness. B. distance. C. time. D. temperature?
Wiki User
∙ 12y ago
no the correct answer is really time
Wiki User
∙ 12y ago
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How can tell how bright a star really is?
Astronomers define star brightness in terms of apparent magnitude (how bright the star appears from Earth) and absolute magnitude (how bright the star appears at a standard distance of 32.6 light years, or 10 parsecs).
What the relationship between magnitude and size of the star?
The brightness of a star depends on its temperature, size and distance from the earth. The measure of a star's brightness is called its magnitude. Bright stars are first magnitude stars. Second magnitude stars are dimmer. The larger the magnitude number, the dimmer is the star.The magnitude of stars may be apparent or absolute.
How do they measure temperature in Argentina?
degrees Celsius
What is the difference between thermocouple and RTD?
A thermocouple measures temperature difference between two points, producing a tiny voltage corresponding to the difference in temperature. To measure temperature with a thermocouple, you need to know the temperature of one junction and calculate the difference from the table or equation for the type of t/c used. An RTD changes resistance in response to temperature--to measure temperature with an RTD you measure its resistance (usually by putting a known voltage across it and measuring the current).
What is the meaning of electronic distance meter?
an Electronic Distance Meter (EDM) is a device that uses infra red or lasers to measure distance, removing the need for tape etc
Unit used to measure the stars is called a?
magnitude for brightness, lightyear for distance, degrees C or K for temperature or colour, solar masses for mass, ...
What unit do you use to measure the distance between one star to another star?
lightyear
How do we measure the distance between stellars?
With maths and light brightness.... Distance between two points...
How many kilometers in one lightyear per hour?
A light year is the distance that light will travel in a vacuum in a year. Nothing can travel that distance in an hour so a lightyear per hour is a meaningless concept of speed. Though impossible to attain, it is a measure of speed while a kilometre is a measure of distance. There is no direct relationship between the two.
What is the distance from earth to the sun in Celsius?
Celsius is a measure of temperature, not distance.
Magnitude is a measurement of what?
Absolute magnitude is a measure of a celestrial object brightness at a set distance. For a star, it would be the brightness at a set distance of 10 parsecs or around 32 lightyears. For a solar system object it would be the brightness from 1 AU. It takes the objects distance out of the equation so that star brightnesses can be directly compared.
What is the measure of the star's brightness?
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
How long is 28 lightyears?
A lightyear is not a measure of time but a measure of length that light can travel in 1 year. It would take 28 years for light to travel a lightyear
What the measure of a stars brightness called?
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
How do you measure stars with scientific notation?
It depends on what you want to measure: their numbers, distance, mass, temperature, ...
What measures the brightness of the star?
photographs use to measure the brightness of a star
How does lightyear travel in 1 second?
A light-year is a measure of distance, just like a foot, a meter or a mile. A measure of distance is not considered to travel. If the question is how far light travels in one second, the answer is 299,792.458 kilometers, or about 186,286 miles. The speeds noted refer to light moving in a vacuum.
