wavelength


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Om Patel
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wavelength

Postby Om Patel » Thu Oct 21, 2021 2:21 pm

does speed increase with wavelength

kareena_prasad
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Re: wavelength

Postby kareena_prasad » Thu Oct 21, 2021 2:34 pm

Speed remains the same. It is always the speed of light, which is 2.998x10^8m/s. Frequency changes with wavelength. As wavelength decreases, frequency increases.

Anne Hogue 2J
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Re: wavelength

Postby Anne Hogue 2J » Thu Oct 21, 2021 3:17 pm

If you are referring to DeBroglie's wavelength, since speed is in the denominator, when speed increases, wavelength decreases and vice versa.

Emily Hou 1H
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Re: wavelength

Postby Emily Hou 1H » Thu Oct 21, 2021 3:27 pm

The speed of light is constant so only frequency changes with wavelength (inversely). In terms of the de broglie equation, the velocity is inversely proportional to the wavelength.

indigoaustin 3H
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Re: wavelength

Postby indigoaustin 3H » Thu Oct 21, 2021 5:23 pm

Regarding light, wavelength does not affect speed since the speed of light=c=2.998*108. With De Broglie's Wavelength, since velocity is in the denominator, we know wavelength and velocity have an inversely proportional relationship. This means when wavelength increases, speed decreases.

Isela Tamayo 3H
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Re: wavelength

Postby Isela Tamayo 3H » Fri Oct 22, 2021 12:20 pm

Speed should always remain constant so it should not be affected by the length of a wavelength.

Hayley Vu
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Re: wavelength

Postby Hayley Vu » Fri Oct 22, 2021 4:45 pm

The speed of any EM radiation is constant at the speed of light (2.998x10^8 m/s). If you're referring to the frequency of a wave: as the wavelength of a wave increases, its frequency decreases.

Jahnavi Srinivas 2H
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Re: wavelength

Postby Jahnavi Srinivas 2H » Fri Oct 22, 2021 5:13 pm

Speed should not be affected by changes in wavelength, unless you are talking about the velocity in De Broglie's equation: lambda = h/mv. In this case, wavelength is inversely related to velocity so increase in velocity would mean there is a decrease in wavelength.

Janys Li - 1L
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Re: wavelength

Postby Janys Li - 1L » Fri Oct 22, 2021 5:19 pm

Hi!
If you are using De broglie's equation, Considering λ=h/mv, as velocity increases, λ decreases. Hope this helps!

Yajing Feng 2J
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Re: wavelength

Postby Yajing Feng 2J » Sun Oct 24, 2021 12:19 pm

Speed does not change with wavelength since speed is a constant: c=2.99792 x 10^8 m/s.

Renga Rengappa 1D
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Re: wavelength

Postby Renga Rengappa 1D » Sun Oct 24, 2021 12:46 pm

Speed of light is a constant c. But if you are referring to the velocity for an electron, that can change based on wavelength.

Evonne Chau 2I
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Re: wavelength

Postby Evonne Chau 2I » Sun Oct 24, 2021 2:51 pm

Hello,

If you're referring to the speed of light, speed does not increase or decrease as it's a constant (c = 2.998 x 10^8). If you're referring to De Broglie's equation (λ = h/mv), the velocity (mv) is inversely proportional to the wavelength (λ). This means that if velocity increases, wavelength decreases, and vice versa.

Vikram Sharma
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Re: wavelength

Postby Vikram Sharma » Sun Oct 24, 2021 3:38 pm

Wavelength and frequency will either increase or decrease to keep the speed of light constant, at 3*10^8 m/s. So what this means, is that if wavelength increases, frequency will decrease by the same proportion to keep the speed of light constant. Frequency would change, speed of light would not.

Jieun 2C
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Re: wavelength

Postby Jieun 2C » Sun Oct 24, 2021 9:54 pm

All electromagnetic radiation travels at the speed of light, so speed is constant. However, in the de Broglie's wavelength, when wavelength increases, velocity decreases because wavelength and velocity are inversely proportional.

Michelle Jeong 1B
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Re: wavelength

Postby Michelle Jeong 1B » Sun Oct 24, 2021 10:06 pm

No speed remains constant. The wavelength is inversely related to the energy though.

Melody_Tapia_1J
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Re: wavelength

Postby Melody_Tapia_1J » Sun Oct 24, 2021 10:14 pm

in terms of light, speed is always the constant 3 x 10^8 m/s.
As wavelength increases though, the frequency of the electromagnetic wave decreases. (The number of wave cycles per second decreases)

Sarah Hong 2K
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Re: wavelength

Postby Sarah Hong 2K » Wed Oct 27, 2021 11:54 am

Speed of light is always constant. It is always 2.998*10^8 m/s, it does not change even if wavelength changes.

Bailey Herbert 2L
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Re: wavelength

Postby Bailey Herbert 2L » Wed Oct 27, 2021 12:40 pm

Speed always remains the same. Different wavelengths will have different levels of energy (the smaller the wavelength the more energy).

rita_h
Posts: 122
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Re: wavelength

Postby rita_h » Wed Oct 27, 2021 12:50 pm

c = wavelength * frequency
speed is always constant (3* 10^8) --> speed of light.
Wavelength varies inversely based on frequency- the lower the frequency, the greater the wavelength and vice-versa.

Alexis Shen 2G
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Re: wavelength

Postby Alexis Shen 2G » Wed Oct 27, 2021 12:59 pm

The speed of light is always the same, so there's never any change. Changing the wavelength won't make it any faster.

Alejandra Hernandez 2A
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Re: wavelength

Postby Alejandra Hernandez 2A » Wed Oct 27, 2021 1:14 pm

If you're talking about De Broglie's equation, then yes as velocity increases then wavelength decreases and vice versa. However, if you are referring to speed as a constant then it should not be affected.

Coraly De Leon
Posts: 105
Joined: Fri Sep 24, 2021 5:56 am

Re: wavelength

Postby Coraly De Leon » Wed Oct 27, 2021 3:44 pm

Hello,
Because the speed of light is constant, the speed does not increase nor decrease with wavelength. But it is crucial to know that energy is associated with the size of a wavelength.

Omar Alkhalili 1J
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Joined: Fri Sep 24, 2021 7:34 am

Re: wavelength

Postby Omar Alkhalili 1J » Wed Oct 27, 2021 3:48 pm

When you look at the equation for wavelength, you will see that there is a constant c, which is speed of light. That is the speed and it does not increase or decrease with wavelength.

Carmen Kim 3I
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Re: wavelength

Postby Carmen Kim 3I » Wed Oct 27, 2021 4:18 pm

Hi,
I believe speed would remain the same even though the wavelength changes. When the wavelength changes, the frequency would only change since the speed is constant. Thus, the speed would not be affected by the wavelength change.

JasmineReyes-2K
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Re: wavelength

Postby JasmineReyes-2K » Sun Oct 31, 2021 6:59 pm

Usually speed of light is constant as wavelength changes but I believe the frequency changes

Joseph Liao 3C
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Joined: Tue Sep 28, 2021 5:04 am

Re: wavelength

Postby Joseph Liao 3C » Sun Oct 31, 2021 7:48 pm

Sometimes, it helps me to remember conceptual topics through formulas and equations we are given. In this case, we are given c=lamba(v) as an equation on our equation sheet, and we are given that c = 2.998*10^8. Thus, even if you don't remember if the speed of light stays constant during a test, you can quickly glance over to your equation sheet and confirm that the speed of light is indeed a constant, no matter wavelength or frequency.

Mahika Saoji 3K
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Re: wavelength

Postby Mahika Saoji 3K » Sun Oct 31, 2021 8:30 pm

Hi!
No. Speed of light is constant. The value of this constant is c = 2.998 x 10^8 m/s.

Daniela G 2C
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Joined: Fri Sep 24, 2021 5:06 am

Re: wavelength

Postby Daniela G 2C » Sun Oct 31, 2021 10:47 pm

Nope! Speed does not increase with wavelength, just as the frequency of electromagnetic radiation also does not determine the speed. The speed of light is constant and that is why the frequency of a wave is inversely proportional to the wavelength.

AndreyCastellanos 3H
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Re: wavelength

Postby AndreyCastellanos 3H » Sun Oct 31, 2021 10:54 pm

Speed stays the same but frequency and amplitude changes

Zoe Apple 1F
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Re: wavelength

Postby Zoe Apple 1F » Sun Oct 31, 2021 10:55 pm

The speed of light is a constant number, c = 2.998x10^8 m/s, so its value is not affected when wavelength is increased or decreased.

Michael 1G
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Re: wavelength

Postby Michael 1G » Sun Oct 31, 2021 10:55 pm

The speed of light is constant regardless of the change in wavelength.

Palig Kechichian 3F
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Joined: Fri Sep 24, 2021 5:26 am

Re: wavelength

Postby Palig Kechichian 3F » Sun Oct 31, 2021 11:28 pm

If you're talking about (c=hv), c (the speed of light) remains constant and it is the wavelength and frequency that fluctuate inversely.

Rishab_Haldar_3B
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Re: wavelength

Postby Rishab_Haldar_3B » Sun Oct 31, 2021 11:41 pm

Since speed remains the same (c which is the speed of light), frequency and wavelength are dependent on one another. An increase in wavelength leads to a decrease in frequency and vice versa.

Akshat Katoch 2K
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Re: wavelength

Postby Akshat Katoch 2K » Mon Nov 29, 2021 10:27 pm

Speed remains constant, this is shown by the equation c=hv. Remember that speed is a constant, c = 2.998 x 10^8 m/s to be exact. However, frequency changes with wavelength and is inversely proportional as well. So as the wavelength decreases, the frequency increases.


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