Light


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VindyMurthy
Posts: 9
Joined: Fri Apr 06, 2018 11:04 am

Light

Postby VindyMurthy » Sun Apr 22, 2018 11:26 pm

If light can be analyzed as both rays and as waves, how do we conceptualize what light is? I know this is more of a theory question but I'm having trouble wrapping my head around it.

Chem_Mod
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Joined: Thu Aug 04, 2011 1:53 pm
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Re: Light

Postby Chem_Mod » Sun Apr 22, 2018 11:55 pm

An individual light particle is called a "photon." The flow of photons moves in a wave and have wave characteristics light wavelength and frequency.

Jessica Lancisi - 1I
Posts: 29
Joined: Fri Apr 06, 2018 11:03 am

Re: Light

Postby Jessica Lancisi - 1I » Mon Apr 23, 2018 10:43 am

is a photon an actual particle for which you could see a "particle" shape for if you were really really tiny? or is it just a wave that is referred to as a particle so it can be quantifies?

Jake Gordon 1A
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Light

Postby Jake Gordon 1A » Mon Oct 08, 2018 11:10 pm

This is extremely difficult because our eyes and brains are not innately made to understand properties at the quantum level. The dual nature of light is what you are referring to. This means that light behaves as a particle and a wave. The wave is typically easier to comprehend as the crests and troughs drawn on the board. However, when light interacts with individual atoms like in the photoelectric effect it behaves as a singular particle called a photon.

kateminden
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

Re: Light

Postby kateminden » Mon Oct 08, 2018 11:47 pm

I am not going to pretend like I completely understand the concept of light (because I'm still pretty confused by it), but in class Professor Lavelle described photons as being discrete packets (or quanta) of electromagnetic energy that simultaneously act like waves and particles. Though photons are often treated as particles, and the photoelectric effect gives evidence that light exhibits behaviors of particles, photons can also be calculated to have frequencies, wavelengths, amplitudes, and other properties of waves. Light behavior can be represented by wave functions that convey the probability of finding a particle at a given place/time. Basically, the probability of a photon being at a given point is a wave, exhibiting properties inherent in wave mechanics, but a photon itself is not a wave.

deepto_mizan1H
Posts: 65
Joined: Fri Sep 28, 2018 12:16 am

Re: Light

Postby deepto_mizan1H » Tue Oct 09, 2018 6:11 pm

I had this question too and still do, but I have come to some understanding that our model for light is still debated on. In a large scale sense, our wave model of light works for our use in physics and larger chemistry, however when coming down to particle side such unique phenomena where intensity does not change the electron's ability to be dislodged (photoelectric experiment) it becomes clear that light also exhibits interesting behavior only understood by specific quanta of energy, otherwise as photons. In larger quantum mechanics light is still difficult to be modeled as the duality of light is thought to often be a combination of both, only a wave form, or perhaps nothing of both! In the end, we need to check our resolution of the problem to understand which model to use and realize that photons are a packet of energy, which can exhibit wave form dynamics on a large scale.


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