Speed of Light


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Emmanuel Ogunrinde 3L
Posts: 14
Joined: Fri Sep 28, 2018 12:24 am

Speed of Light

Postby Emmanuel Ogunrinde 3L » Sun Oct 14, 2018 1:54 am

Is speed of light a constant (3*10^8) or does it ever change?

Clarissa Nava 3H
Posts: 60
Joined: Fri Sep 29, 2017 7:05 am

Re: Speed of Light clarissa nava 3H

Postby Clarissa Nava 3H » Sun Oct 14, 2018 3:40 am

It does not change it will always be 3*10^8

AustinGrove3B
Posts: 53
Joined: Fri Sep 28, 2018 12:23 am

Re: Speed of Light

Postby AustinGrove3B » Sun Oct 14, 2018 11:55 am

more specifically 2.99792 x 108. I think in the book they use this (more sig figs) than 3.0 x 108

Maya_Peterson1C
Posts: 62
Joined: Fri Sep 28, 2018 12:28 am

Re: Speed of Light

Postby Maya_Peterson1C » Sun Oct 14, 2018 11:57 am

I did some research behind it, and some sources are claiming that recent studies show light doesn't always travel at the speed proposed by Einstein's theory. However, for the purposes of this class the speed of light is assumed to be constant.

Manya Kidambi 3I
Posts: 31
Joined: Fri Sep 28, 2018 12:24 am

Re: Speed of Light

Postby Manya Kidambi 3I » Sun Oct 14, 2018 12:03 pm

You should treat it as a constant in any sort of calculations done for this class. I’m sure for higher level chemistry this would be different, but at this point I wouldn’t worry.

Ruiting Jia 4D
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

Re: Speed of Light

Postby Ruiting Jia 4D » Sun Oct 14, 2018 2:22 pm

AustinGrove3B wrote:more specifically 2.99792 x 108. I think in the book they use this (more sig figs) than 3.0 x 108


Would it be advisable to calculate using 2.99792 x 10^8 on the exams? I'm not sure when to apply significant figures - either throughout the problem or just for the final answer.

404817859
Posts: 27
Joined: Tue Nov 14, 2017 3:02 am

Re: Speed of Light

Postby 404817859 » Sun Oct 14, 2018 3:04 pm

sig figs will give more of an precise answer, either way should work :)

405098546
Posts: 32
Joined: Fri Sep 28, 2018 12:24 am

Re: Speed of Light

Postby 405098546 » Sun Oct 14, 2018 3:42 pm

For the purposes of this class the speed of light probably will always stay the same. Though I think in certain mediums like water or glass the light of speed can change.

Dhwani Krishnan 1G
Posts: 63
Joined: Fri Sep 28, 2018 12:17 am

Re: Speed of Light

Postby Dhwani Krishnan 1G » Sun Oct 14, 2018 3:58 pm

the speed of light changes with the medium, in air it is 3.0x10^8m/s.

Timothy_Yueh_4L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

Re: Speed of Light

Postby Timothy_Yueh_4L » Sun Oct 14, 2018 4:28 pm

Just wanted to add that the speed of light is constant throughout the entire electromagnetic spectrum (~3.00 * 10^8 m/s)

Diana Sandoval 1K
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Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

Re: Speed of Light

Postby Diana Sandoval 1K » Sun Oct 14, 2018 4:58 pm

It's assumed to be a constant and from my knowledge I believe we will be given the constant.

Anjali 4A
Posts: 59
Joined: Fri Sep 28, 2018 12:28 am

Re: Speed of Light

Postby Anjali 4A » Sun Oct 14, 2018 5:01 pm

Will we be provided all of these constants/equations during the tests, midterms and final?

Danny Zhang 4L
Posts: 62
Joined: Fri Sep 28, 2018 12:26 am

Re: Speed of Light

Postby Danny Zhang 4L » Sun Oct 14, 2018 5:55 pm

Anjali 4A wrote:Will we be provided all of these constants/equations during the tests, midterms and final?


I am sure that we will get a cover sheet with all of the constants/equations as we did on the first test on all future tests as well.

Connie Chen 3D
Posts: 31
Joined: Mon Jan 08, 2018 8:12 am

Re: Speed of Light

Postby Connie Chen 3D » Sun Oct 14, 2018 9:06 pm

The speed of light is a constant, therefore it will never change. You can, however, convert it to other units if you wish, as long as all the correct units cancel out.

janessadai 1F
Posts: 14
Joined: Fri Sep 28, 2018 12:18 am

Re: Speed of Light

Postby janessadai 1F » Mon Oct 15, 2018 9:07 am

The speed of light is always constant, and we are provided the value during tests and exams so we can just use whatever value they give us

isarose0
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: Speed of Light

Postby isarose0 » Mon Oct 15, 2018 11:48 am

The speed of light is constant and will not change, there may be a more specific value, however, it is most commonly known as 3x10^8 m/s

Aleeque Marselian 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

Re: Speed of Light

Postby Aleeque Marselian 1A » Mon Oct 15, 2018 4:02 pm

I'm pretty sure that for this class, we treat the speed of light as a constant all the time.

405098546
Posts: 32
Joined: Fri Sep 28, 2018 12:24 am

Re: Speed of Light

Postby 405098546 » Sat Dec 08, 2018 11:15 pm

Speed of light is constant

davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: Speed of Light

Postby davidryan3f » Sat Dec 08, 2018 11:16 pm

light always travels at the same speed regardless of wavelength or amplitude. it is a constant.


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