0
What else can I help you with?
How do astronomers determine the speed at which a galaxy is moving?
By examining its spectrum, and identifying absorption lines in it. Lines are shifted toward shorter wavelength if the object is moving towards us. They're shifted toward longer wavelength if the object is moving away from us.
Which of these external stimuli produces growth of the plant toward light?
The stimulus that produces growth of the plant toward light is called phototropism. It is caused by the presence of blue light, specifically light in the 440-470nm wavelength range, which is detected by the plant's photoreceptor molecule called phototropin. This photoreceptor triggers a signaling pathway that stimulates cell elongation on the shaded side of the plant, resulting in growth towards the light source.
Which type of visible light has the longest wavelength?
The longest wavelength / lowest frequency visible light is the red end of the spectrum. The shortest wavelength / highest frequency visible light is the violet end of the spectrum.
What color of visible light has the longest wavelength?
Red is the longest wavelength of visible light
What is growth movement of a plant toward the light called?
phototropism.
How do astronomers determine the speed at which a galaxy is moving?
By examining its spectrum, and identifying absorption lines in it. Lines are shifted toward shorter wavelength if the object is moving towards us. They're shifted toward longer wavelength if the object is moving away from us.
When a star or galaxy moves quickly toward an observer the light it emits will appear?
It will be "blue-shifted". That is, the wavelength of the light will appear to be shorter and so more blue.
What is an increase in the wavelength of light as a galaxy moves away from earth?
Red Shift
What is a light having one wavelength called?
At a single wavelength, it is called monochromatic
What is a wavelength of light that can be seen called?
It is literally called visible light..
How can the wavelength of light from a distant galaxy be used to determine the distance between earth and the galaxy?
The wavelength of light from a distant galaxy can be analyzed using the redshift phenomenon, where light stretches and shifts to longer wavelengths as the galaxy moves away from Earth. By measuring this redshift, astronomers can determine the galaxy's velocity relative to us. Using Hubble's Law, which relates the velocity of a galaxy to its distance from Earth, they can calculate the galaxy's distance based on its observed redshift. This method is crucial for understanding the expansion of the universe and the distribution of galaxies.
How important is red shift to your understanding of the universe?
Redshift happen when light seen from the object that is moving away is proportionally increased in wavelength (i.e shifted toward the red end of the spectrum) . Thus red shifts relates that further the galaxy ( outside or inside the local cluster ) more it is red-shifted (i.e greater the wavelength ) than the closer galaxy and it explain the expansion of our universe , further the galaxy more fast it moves away from us .
What would evidence of a galaxy moving toward Earth?
A blueshift in the galaxy's spectrum - that is, the frequency of the light, as observed by us, is greater than when it was emitted.
Which of these external stimuli produces growth of the plant toward light?
The stimulus that produces growth of the plant toward light is called phototropism. It is caused by the presence of blue light, specifically light in the 440-470nm wavelength range, which is detected by the plant's photoreceptor molecule called phototropin. This photoreceptor triggers a signaling pathway that stimulates cell elongation on the shaded side of the plant, resulting in growth towards the light source.
How can astronomers determine whether star is moving toward or away from earth?
Astronomers determine whether a star is moving toward or away from the Earth via the Doppler effect. Imagine a motorcycle moving past you. As it drives towards you, it has a higher frequency, and a lower frequency when it drives away. The same thing happens with light. As an object moves towards us, its light has a higher frequency and lower wavelength - this is called blueshift. As an object moves away from us, its light has a lower frequency and higher wavelength - this is called redshift.
What is the number of centimeters between waves of light?
The measure of a light's frequency is called wavelength.
What does the increase in wavelength of light from a galaxy mean?
This is usually expressed, equivalently, as a reduction in frequency. It means that the galaxy moves away from us. For more information, you may want to read about redshift.
