Quality Learning Support For Better Outcomes
First time here? Checkout the FAQs!
x
MathsGee is Zero-Rated (You do not need data to access) on: Telkom |Dimension Data | Rain | MWEB

0 like 0 dislike
186 views
Why does light travel and permeate through glass?
in Physics by Diamond (80,644 points)
recategorized by | 186 views

7 Answers

1 like 0 dislike
Best answer
Photons pass through glass because they are not absorbed. This is because there is nothing which "absorbs" light in visual frequencies in glass. Light is an electromagntic wave, comprising of changing electric field, which produces a changing magnetic field, which produces a changing electric field. This is how the light propagates through space. Because glass does not absorb these photons, they are absorbed by the inter atomic bonds (phonons) and re-emitted, this is essentialy why the speed of light in glass is slower. It appears transparent because the direction of the light is preserved by the ordered bonds and because little of the energy is lost.

When light rays interact with an entity, like a piece of glass, the electromagnetic wave causes the electron clouds in the material to vibrate and as they vibrate, they regenerate the wave. This happens in a succession of "ripples" as the light passes through the object.
by Wooden (352 points)
selected by
1 like 0 dislike

There are three ways that light interacts with matter: absorption, transmission, and reflection. We will focus on absorption and transmission. Recall that light (or more generally electromagnetic radiation) is just another form of energy. Absorption happens when incident light has enough energy to excite an electron from its lowest energy, i.e., ground, state to a higher energy, i.e. excited state. 

However, if the incoming light does not have enough energy to excite an electron to an excited state, that light will simply pass through, i.e., transmit. Emission is also possible, but for materials like glass, you are more likely to get emission via phonons (i.e., heat) rather than photons (i.e., light). In a solid like glass, these energy states form a set of energy bands and between these energy bands there may be an energy gap where no electrons are allowed to transition. For glass, this energy gap is large. What this means is that any wavelength of visible light is not sufficient to excite electrons from the ground state, and thus transmits. However, UV light is high enough energy and you would find that glass is opaque to it.

by Wooden (842 points)
1 like 0 dislike

the light will pass through the glass, because glass is transparent. ... This 'bending of a ray of light' when it passes from one substance into another substance is called refraction.

by Wooden (518 points)
1 like 0 dislike
most of the light is of energy and size that its fits between the gaps and glass particles .some light is reflected especially at the high energy bands,like UV ,hence why you dont tan behind glass.
by Wooden (428 points)
0 like 0 dislike
light that is visible to us passes through glass because the arrangement of the atoms in glass means that they can sustain the ripple effect described above at those frequencies, so light can pass through
by Wooden (266 points)
0 like 0 dislike
Light is an electromagnetic wave, which means it contains a changing electric field. When it comes into contact with glass the wave excites the electrons within and causes them to vibrate. This vibration propagates the wave through the glass.
by Wooden (780 points)
0 like 0 dislike
Most of the light is of an energy and size that it fits between the gaps and glass particles, and also the arrangement of the atom in glass means that they can sustain the ripple effect.
by Wooden (622 points)

Related questions

0 like 0 dislike
1 answer
0 like 0 dislike
1 answer
0 like 0 dislike
0 answers
asked Sep 7, 2018 in Physics by anonymous | 11 views
0 like 0 dislike
0 answers
asked Jan 2 in Physics by MathsGee Diamond (80,644 points) | 28 views
0 like 0 dislike
1 answer
1 like 0 dislike
0 answers
0 like 0 dislike
0 answers
0 like 0 dislike
0 answers
asked Sep 5, 2020 in Physics by Teddy Bronze Status (9,552 points) | 19 views
0 like 0 dislike
0 answers
asked Jul 27, 2018 in Physics by anonymous | 10 views

Join the MathsGee Answer Hub community and get study support for success - MathsGee Answer Hub provides answers to subject-specific educational questions for improved outcomes.



On MathsGee Answers, you can:


  1. Ask questions
  2. Answer questions
  3. Comment on Answers
  4. Vote on Questions and Answers
  5. Donate to your favourite users
  6. Create/Take Live Video Lessons

Posting on MathsGee


  1. Remember the human
  2. Behave like you would in real life
  3. Look for the original source of content
  4. Search for duplicates before posting
  5. Read the community's rules
MathsGee Tools

Math Worksheet Generator

Math Algebra Solver

Trigonometry Simulations

Vectors Simulations

Matrix Arithmetic Simulations

Matrix Transformations Simulations

Quadratic Equations Simulations

Probability & Statistics Simulations

PHET Simulations

Visual Statistics

MathsGee ZOOM | eBook