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Does a hot object emit photons with a longer wavelength than cold objects?
Wiki User
∙ 11y ago
nopes, shorter.
hot object will emit photons at high frequency (=blue flame for example, short WL)
and cold object will emit photons at lower frequency (=IR for example which our bodies emit, long WL)
Wiki User
∙ 11y ago
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What will happen to an objects wavelength as the object moves toward you?
The wavelength will be compressed/shortened.
The slower an object vibrates the longer wavelength will be?
longer
Will a wavelength be shorter or longer the slower the object vibrates?
longer
What did you observe about the wavelength and frequencies of the different colors of light?
A higher frequency means a shorter wavelength, and a lower frequency means a longer wavelength.
Why can't objects be seen clearly through a translucent object?
Because while the opacity of the object will allow photons through, they do not maintain their original trajectory.
What will happen to an objects wavelength as the object moves toward you?
The wavelength will be compressed/shortened.
The slower an object vibrates the longer wavelength will be?
longer
Will a wavelength be shorter or longer the slower the object vibrates?
longer
What did you observe about the wavelength and frequencies of the different colors of light?
A higher frequency means a shorter wavelength, and a lower frequency means a longer wavelength.
What creates the phenomenon known as the red shift?
The expansion of space in all parts of our Universe. When a group of photons leave an object (like a super-nova in a distant galaxy), they have a certain wavelength, and a certain distance between the first photons from that super-nova and the last such photons. During their travel, the expansion of space causes the wavelength of the photons to increase (even if they interact with no matter whatsover in their travels), as well as the distance between the first photons to leave and the last photons to leave. If these photons travel for enough time (say, a few 100 million to a few billion years) before they reach a detector on our Earth, the increase in wavelength AND the distance between the first and last photons becomes measurable. The photons have a wavelength longer than they "should" have, and the time between the first photons to arrive and the last to arrive will increase. The increase in wavelength, as well as the increase in time for the super-nova to last, will be as predicted by Hubble's Law.
When the wavelength of a spectral line emitted from an object increases which end of the visible light spectrum does not move toward and what is the objects motion relative to earth?
Increasing wavelength is an indication of a Doppler shift caused by an object moving away from the viewer. Longer wavelengths (of the visible spectrum) are redder, shorter wavelengths are bluer. Objects moving away from you have a red shift, objects moving toward you have a blue shift.
What makes gold shiny?
Light is composed of very small packages of electromagnetic energy called photons. We are able to see objects because light photons from the sun (or other light source) reflect off of the atoms within the object and some of these reflected photons reach the light sensors in our eyes and we can see the objects. It takes many millions of photons entering our eyes each second for us to view the world. When photons of light hit the atoms within an object three things can happen. First, the photons can bounce back from the atoms in the object; we call this reflection. Second, the photons can pass through an object such as glass and we call them transparent. Three, the photons can be stopped by the atoms within the object and the photon energy is converted to heat; we call this absorption.
Why can't objects be seen clearly through a translucent object?
Because while the opacity of the object will allow photons through, they do not maintain their original trajectory.
How can an electrically charged object attract or repel another charged object with out any contract between the objects?
Electric and magnetic forces are transmitted via photons.
Why is de broglie wavelength associated with macroscopic objects is not observed in daily life?
Because such a wavelength is way too small to be significant. The de Broglie wavelength is inversely proportional to an object's momentum (mass x speed).
What does the wavelength of light tell us about an objects movement?
Assuming the object's moving rapidly enough to affect the light from it observedly: If approaching the light will be biased to blue (higher-f, lower wavelength); If receding, the light will be redder (red-shift), or lower-f, longer wavelength) by Doppler effect. If the true spectrum can be determined then the shift either way can be used to calculate the object's speed relative to the observer (not necessarily its true speed!).
What will happen to an object wavelength as the object move toward you?
The wavelength will be shorter!
