@HuygensOptics

@HuygensOptics

Huygens Optics | Coherence part 3: This is not a wave. @HuygensOptics | Uploaded May 2023 | Updated October 2024, 1 hour ago.
Trying to find analogies between the wave energy confined in a string and matter interacting with light.

0:00 Intro
6:38 Experiments with waves in a string
15:40 Analogies with electron behaving as waves
22:50 Changing the standing wave mode in a string using phase manipulation
26:49 A hypothetical model for demonstrating quantized wave behavior in a string
32:26 Elastic-Inertial Poetry

For this video I used a a few short clips from the following videos and websites:

Spinning ball (from Mike Shake):
youtube.com/watch?v=mNBEyjE72w8

Charged ball (from Plasma Channel)
youtube.com/watch?v=nxagMrTVonQ

Refracted wave: (by Ulflund)
commons.wikimedia.org/w/index.php?curid=73784342

If you like the painting then visit the Rene Magritte website:
renemagritte.org/the-treachery-of-images.jsp

Wave animation at 32:25 by Nils Berglund: youtube.com/@NilsBerglund

Did I forget anybody? let me know an I will set it straight.

$Coherence part 3: This is not a wave. Trying to find analogies between the wave energy confined in a string and matter interacting with light. 0:00 Intro 6:38 Experiments with waves in a string 15:40 Analogies with electron behaving as waves 22:50 Changing the standing wave mode in a string using phase manipulation 26:49 A hypothetical model for demonstrating quantized wave behavior in a string 32:26 Elastic-Inertial Poetry For this video I used a a few short clips from the following videos and websites: Spinning ball (from Mike Shake): https://www.youtube.com/watch?v=mNBEyjE72w8 Charged ball (from Plasma Channel) https://www.youtube.com/watch?v=nxagMrTVonQ Refracted wave: (by Ulflund) https://commons.wikimedia.org/w/index.php?curid=73784342 If you like the painting then visit the Rene Magritte website: https://www.renemagritte.org/the-treachery-of-images.jsp Wave animation at 32:25 by Nils Berglund: https://www.youtube.com/@NilsBerglund Did I forget anybody? let me know an I will set it straight.$

Why is this Space Telescope so Tiny?

DMD Mirrors in a DLP-Projector Moving in Slow Motion (Stroboscopic Effect)

$Directional coherent wave source This short shows a directional wave source that is made by spacing omnidirectional wave emitters in a very specific configuration. The animations were created using the wave simulation code made by @DiffractionLimited As for the question at the end of the video about being able to spot how destructive interference comes about: this is basically impossible to see in the animation. So the answer to the question is NO. However, there are few ways that you can look at how the phenomenon comes about: 1) When moving away in the horizontal direction of a row of emitters, for every point there is an equal amount of emitters that has a particular phase, compared to the emitters that have a phase 180 degrees shifted. So, when adding up these 2 contributions for all the emitters together in a row, this results in a wave amplitude that is almost zero in this direction. 2) An alternative way to look at this is the following: because of the spatial separation of exactly 1 lambda in the vertical direction, a standing wave arises in the array that has almost equal field strength in the horizontal direction within the array. And because the sources are moving in phase with the standing wave, they cannot transfer energy into the surrounding field in the horizontal direction. This also explains why a low intensity in the horizontal direction exists. Both views are in my opinion valid, but I think the second one is a bit more intuitive. Simulation code supplied by @DiffractionLimited The image files for the simulation can be downloaded here: https://huygensoptics.com/2D_wave_sims/coherent_source_detail.png https://huygensoptics.com/2D_wave_sims/coherent_emitter_vertical_100.png #light #physics #optics #short$

DIY Photolithography using 1980s Carl Zeiss S-Planar Lens (405nm)

Maskless Wafer Stepper Part 2: Mechanics

$Gravitational Index of Refraction$

Carl Zeiss S-planar lens pt.2: resolution explained

$Coherence in star light This short discusses (very briefly) the difference between temporal and spatial incoherence. It also contains a wave animation of a telescope mirror that concentrates a field on a sensor. Of those of you who want to know more about coherence I made these videos: Temporal coherence: https://www.youtube.com/watch?v=dtcq5b0R65w Spatial coherence: https://www.youtube.com/watch?v=nba4ztLBEh0 Presented here are 2D-animations of a field, which means that the intensity of the focused light at the sensor increases with the diameter of the mirror. In a 3D scenario however, the intensity increases with the square of the diameter of the mirror, leading to a much larger difference between the incoming and focused radiation intensity. Simulations were created using the python code supplied by @DiffractionLimited The simulation image file can be downloaded from: https://huygensoptics.com/2D_wave_sims/telescope_incoherent_light.png Milky Way picture by Philippe Donn #short #light #physics #optics$

The double beam experiment

How big is a visible photon?

$How a Lens creates an Image. Contents: 0:00 Introducing rays 2:14 Light is a wave 4:00 Nils reached one thousand! 4:43 Effect of Numerical Aperture 6:46 About Critical Dimension 7:40 Effect of NA illustrated using a microscope 10:44 Diffraction in the Double Slit Experiment 12:30 Diffraction in the Circular Slits (Fresnel Zone Plates) 14:40 Effect of central obstruction on focus 15:05 Using diffraction to create an Image 18:59 Comparison to the Fourier Series Approximation 19:44 Image Creation and JPEG compression 20:59 Effect of wavelength on definition 21:35 Extroduction A list of links to subjects mentioned in the video: Nils Berglunds Channel: https://www.youtube.com/c/nilsberglund Link to the full NA video by Nils: https://www.youtube.com/watch?v=RbojFORps98 Making Fresnel Zone plates: https://www.youtube.com/watch?v=uf3Y0-6NbjQ Building a Maskless Wafer Stepper: https://www.youtube.com/watch?v w0Z2Y5vaAQ&t=343s Some images were taken from JW Middelink Systematische Natuurkunde Deel B. This book series is absolutely awesome. They made me enjoy my high school physics classes and that is why I held on to them for 40 years. The video contains a short audio clip that is inspired on another one bites the dust by Queen. I did not use the original drums and bass but, Freddy himself did contribute in his own special way. I consider this fair use but if you are the copyright owner, please contact me in case you consider this a copyright breach. Today on the date of video publication it is 32 years ago exactly that Freddy Mercury died of Aids. Apparently, the lady in the compression images is named Lena. If I had known the history behind the image and why it became so famous, I would probably not have used it: https://pursuit.unimelb.edu.au/articles/it-s-time-to-retire-lena-from-computer-science A correction about the name of ASML: currently, this is the actual name of the company, so without any reference to the origin of the abbreviation. Advanced Semiconductor Materials Lithography was the name of the joint venture of ASM (founded by Arthur del Prado) and Philips Electronics, intended for the development of photolithography machines. Did I forget to mention you? Please contact me and I will sort it out.$

Coherence part 3: This is not a wave. @HuygensOptics