Optics Forum

Post thread
Undergrad Double Slit Experiment on Refracted light?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Trying to understand a constant in the phase shift (or difference?) of 2 waves
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How does light reflect off a moving angled mirror?
  • · Replies 3 ·
Replies
3
Views
5K
High School Why Does Single-Slit Diffraction Create a Pattern of Maxima and Minima?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Why Are Only Sodium Spectral Lines Visible in Sodium Vapor Lamps?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Questions on Waves: Answers to 3 Questions
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Has the speed of light remained constant throughout history?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Effect of 3D photons on a 2D universe. Help me understand?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate A question about notation in OPtics
  • · Replies 5 ·
Replies
5
Views
2K
High School Ray Type of Bulb Light Emission
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Lens calculation problem (Optics)
  • · Replies 5 ·
Replies
5
Views
5K
Graduate How does circularly polarized light rotate a body?
  • · Replies 16 ·
Replies
16
Views
6K
High School Can light exert force on objects?
  • · Replies 21 ·
Replies
21
Views
23K
High School How efficient is a microwave oven
  • · Replies 12 ·
Replies
12
Views
35K
High School Why could we see a laser hologram?
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Traveling at speed of light, and time.
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Is Simplifying Snell's Law to n1θ1=n2θ2 Valid for Small Angles?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Aligning a Michelson interferometer
  • · Replies 5 ·
Replies
5
Views
6K
Graduate Luminance of a lambertian sphere (formula)
  • · Replies 1 ·
Replies
1
Views
8K
Undergrad How Does Microwave Wattage Affect Standing Waves?
  • · Replies 8 ·
Replies
8
Views
8K
Graduate Can Diffraction Effects be Removed with an Interferometer?
  • · Replies 1 ·
Replies
1
Views
2K
High School Why don't we emit radio waves
  • · Replies 19 ·
Replies
19
Views
15K
Undergrad How X-rays Compress Matter for Nuclear Fusion
  • · Replies 2 ·
Replies
2
Views
3K
High School Transmission, reflection, and absorbtion
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad What happens to the energy in case of destructive interference ?
  • · Replies 6 ·
Replies
6
Views
5K
High School Different ways to measure the speed of light experimentally ?
  • · Replies 4 ·
Replies
4
Views
16K
Undergrad Difference between phase difference and path difference
  • · Replies 5 ·
Replies
5
Views
109K
High School Can camera flashes really damage historical sites?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Total internal reflection mirror?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Unusual Color Effect of Laser Pointer on Red Plastic: A Scientific Investigation
  • · Replies 9 ·
Replies
9
Views
6K
Undergrad Can an Oscillator Generate Visible Light Through an Antenna?
  • · Replies 2 ·
Replies
2
Views
3K
High School Snells Law and refractive index
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Is light really light outside the human brain?
  • · Replies 2 ·
Replies
2
Views
2K
High School Where exactly is pure blue (in nanometers)?
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Can a Lens Create a Rainbow from a Broad Beam of Light?
  • · Replies 2 ·
Replies
2
Views
2K
High School Is a Two-Sided Reflective Dish Considered a Hologram?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Magnifying a display without compromising exit pupil
  • · Replies 2 ·
Replies
2
Views
3K
High School Why the moon looks bigger at the horizon
  • · Replies 163 ·
6
Replies
163
Views
33K
High School Can We Physically Detect Radio Waves?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad What causes light to bend when passing the edges of objects?
  • · Replies 36 ·
2
Replies
36
Views
26K
Graduate How close can 2 coherent photons be?
  • · Replies 5 ·
Replies
5
Views
4K
High School Question about waves, maybe diffraction related
  • · Replies 2 ·
Replies
2
Views
2K
High School Ultraviolet Curing to Make Metal Stronger
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Understanding the Mirror Formula: Actual Measurements vs Sign Convention
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Is it possible that some galaxies we observe are reflections of our own?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad If something emits visible light
  • · Replies 1 ·
Replies
1
Views
2K
High School Why can we see the light from a source from afar, but
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Diffuse Reflection: How is it Computed?
  • · Replies 6 ·
Replies
6
Views
5K
Graduate How Were Emission Lines Observed in Different Spectra Ranges?
  • · Replies 4 ·
Replies
4
Views
7K
Graduate What is Hyper-Rayleigh and what is Hyper-Raman?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Optical power lost at a pinhole
  • · Replies 1 ·
Replies
1
Views
2K
High School Light, photons, reflection and percentages
  • · Replies 1 ·
Replies
1
Views
2K
High School Mirror or Camera: Which is the Truest Reflection of Our Perception?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Phase change of reflected wave
  • · Replies 6 ·
Replies
6
Views
13K
Undergrad Single and double slit simple question
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Rutherford Scattering: Inverse Relationship Explained
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad What is the cause of reflection?
  • · Replies 26 ·
Replies
26
Views
24K
Undergrad How Can a Near Object Be Focused While Looking at Distant Objects?
  • · Replies 4 ·
Replies
4
Views
4K
High School Why can AM radio waves travel over mountains while FM signals cannot?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Composition of the sun and spectrum of light
  • · Replies 1 ·
Replies
1
Views
4K
Undergrad Why does light travel at the speed it does?
  • · Replies 116 ·
4
Replies
116
Views
38K
Graduate Detecting single photons - conceptual question
  • · Replies 11 ·
Replies
11
Views
5K
Undergrad Faster than the speed of light
  • · Replies 12 ·
Replies
12
Views
5K
Undergrad Lens shapes other than conic sections
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Polar molecules like water Spin why?
  • · Replies 2 ·
Replies
2
Views
2K
High School Is invisibility really achieved?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How does the Hamaker Constant relate to the refractive indices of materials?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Polarization and crystallography
  • · Replies 6 ·
Replies
6
Views
4K
Undergrad Meaning of Phase in stationary waves
  • · Replies 6 ·
Replies
6
Views
14K
Undergrad Can a Radio Wave Camera Be Used to Track Wildlife in the Field?
  • · Replies 5 ·
Replies
5
Views
7K
Graduate Wavelength of photon in a medium
  • · Replies 18 ·
Replies
18
Views
4K
Undergrad Why can't waves (light) be in two mediums at the same time?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Could the speed of light be variable?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Can Anomalous Dispersion Enhance Resonant Cavities for Solar Cell Applications?
  • · Replies 4 ·
Replies
4
Views
3K
High School How does polarization take place by reflection?
  • · Replies 1 ·
Replies
1
Views
4K
Undergrad Radius of Photons? - Get Answers Here
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Why Does the Angle of Refraction Change in Borosilicate Glass Experiments?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Tyndall vs Rayleight Light Scattering
  • · Replies 2 ·
Replies
2
Views
17K
Undergrad Spectral filtering of RGB components -
  • · Replies 5 ·
Replies
5
Views
2K
Graduate What is the relationship between antenna tuning and photons emission by antenna?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Happy and excited beams of light
  • · Replies 8 ·
Replies
8
Views
3K
Undergrad Lens that will make the rays parallel to each other
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Why doesn't a biconvex lens cancel itself out and not change the light beam?
  • · Replies 3 ·
Replies
3
Views
3K
High School Why do telescopes have long barrels?
  • · Replies 11 ·
Replies
11
Views
4K
Undergrad Why does red light travel faster than blue light in glass or water?
  • · Replies 18 ·
Replies
18
Views
12K
High School Is Huygens' Principle Intuitive or Just Mathematical?
  • · Replies 1 ·
Replies
1
Views
2K
High School Rear View Mirrors: Objects Closer Than They Appear
  • · Replies 43 ·
2
Replies
43
Views
20K
Undergrad Creating a Converging Lens for Sound Waves at the Exploratorium in San Francisco
  • · Replies 1 ·
Replies
1
Views
5K
Undergrad Diffused Sun/Moon Reflection: Why Water Appears as Columns
  • · Replies 5 ·
Replies
5
Views
5K
High School Does this person see the mirage as we do?
  • · Replies 2 ·
Replies
2
Views
2K
High School Why does light bend when it passes through different mediums?
  • · Replies 4 ·
Replies
4
Views
16K
High School Slanted Windows: Reducing Glare in Department Stores
  • · Replies 1 ·
Replies
1
Views
6K
Undergrad Effect of thickness of atmosphere on the incident light on land
  • · Replies 3 ·
Replies
3
Views
6K
High School Why Does a Nearby Light Source Produce a Blurry Shadow?
  • · Replies 18 ·
Replies
18
Views
20K
Undergrad Understanding Rayleigh Scattering: Why do Atoms Scatter Light?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How do we measure the frequency of light?
  • · Replies 11 ·
Replies
11
Views
17K
High School What is the Optimal Camera Distance for Photographing a Mirror Image?
  • · Replies 4 ·
Replies
4
Views
4K
High School Why Does Refraction Cause an Elliptical Sun?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Contradictory: Sky blue and sunset red?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate How do free electrons in metals interact with and reflect photons?
  • · Replies 1 ·
Replies
1
Views
2K