9 Light Experiments That Will Blow Your Mind

Ever noticed how light is the first thing we see when we're born? It's like the universe saying, 'Welcome!' In just a few weeks, we start recognizing faces and things with the help of this friendly light.
But here's the cool part - as we grow up, we find out that light is not just there; it's kind of mysterious. You can't touch it, but you can see it everywhere, especially from the Sun. All stars produce light!
Even though light is super important for life on Earth, we don't know everything about it. Scientists have been puzzled by this invisible thing for a long time. So, in this video, we'll check out how holograms are made, learn the secrets behind your sunglasses, and even figure out why the speed of light is the way it is. Join us as we dive into experiments that shine a light on the stuff that brightens up our world.
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Newton’s Prism and Pink Floyd
Would you believe me if I told you that the iconic Pink Floyd album cover, "The Dark Side of the Moon," shares a profound connection with Sir Isaac Newton?
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Young’s Double Slit Experiment and Fresnel Lenses
In the 19th century, Augustin-Jean Fresnel and Thomas Young brought about a significant change in our understanding of light by supporting the wave theory.
Single Photon Double Slit Experiment
In Young's experiment, originally, a full beam of light passed through the slits. But then someone had a curious thought: What if we sent only one photon at a time through the slit?
Einstein's Photoelectric Effect and Planck's Quanta
Einstein himself acknowledged that meticulous experiments could reveal whether light behaved as particles or waves. In 1905, he delved into the photoelectric effect, a phenomenon discovered two decades earlier by scientist Heinrich Hertz.
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As you can understand, a series of experiments on the nature of light triggered a paradigm shift in our understanding of reality. This transformative period altered the course of science, prompting scientists to reexamine past experiments and search for clues that would contribute to a groundbreaking theory of light. This emerging theory challenged our existing knowledge and paved the way for the development of quantum theory. Since those pivotal moments, science has never been the same, and the exploration of light has opened up new realms of understanding.
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Speed of Light!
But let’s leave behind the dual nature of light for a moment, and focus on another of its intrinsic properties: speed.
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Dirac and the 3 Polarizers Paradox
In this video, we're discovering that intriguing phenomena unfold when we manipulate light. Fresnel, known for his fascination with lenses and light, was well aware of this.
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Compton and Rayleigh Scattering
It's important to note that not all scientists were initially convinced that light could exhibit both wave and particle characteristics. This skepticism led scientists from diverse backgrounds, countries, and time periods to conduct their own experiments in an attempt to better understand the nature of light.
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Temporal Double Slit Experiment
Let's think again about the coolest experiment with light - the double-slit experiment. It showed that light can act like both a wave and a particle. Now, in 2023, scientists at Imperial College did something neat.
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The Probabilistic Nature of Reality - A Thought Experiment
Here's the deal: when we try to observe light, it's like catching it playing hide and seek. It decides to be all discreet and quantized, snapping to specific values. No one really knows why it does that - it's a cosmic mystery.--
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Credits: Ron Miller, Mark A. Garlick / MarkGarlick.com ,Elon Musk/SpaceX/ Flickr
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00:00 Intro
1:00 Newton’s Prism and Pink Floyd
3:18 Young’s Double Slit Experiment and Fresnel Lenses
9:30 Single Photon Double Slit Experiment
11:58 Einstein's Photoelectric Effect and Planck's Quanta
15:40 Speed of light!
21:44 Dirac and the 3 Polarizers Paradox
24:40 Compton and Rayleigh Scattering
30:10 Temporal Double Slit Experiment
32.30 The Probabilistic Nature of Reality - A Thought Experiment
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#insanecuriosity #light #quantummechanics

[@steve25782]

The people who set the standards in the metric system redefined the meter slightly to make the speed of light EXACTLY 300,000 kilometers per second. That's the new definition of the meter. :-)

[@fathertimegaming17]

Yeah, I guess it wouldn't make much sense if the first thing we saw when we were born was sound. Good point.

[@evanneal4936]

Love that you mentioned pink floyd

[@JungleJargon]

There are three rates to consider. 1. The diminishing effect or draw of gravity away from the center of mass. 2. The increasing rate of time away from the center of mass. 3. The increasing measure of distance away from the center of mass. Speed is measured by time and distance which change and that changes the speed of light and causation. Distance gets longer without gravity and time goes by faster, both of which speed up causation. The light has to arrive at a farther distance faster when distance is stretched *and* time also goes by faster. *Then* there is the first thing to consider and that is the diminishing draw of gravity which means things eventually slow down the farther away they are from the center mass of a galaxy. (It's not complicated.) 😎

[@robertanderson5092]

To a photon, time is an emergent property of slowing down

[@JungleJargon]

@@robertanderson5092 What slowing down?

[@Epoch11]

You explained a lot of the things that people often forget to mention and it would be nice to see even more detailed videos let go into a deeper explanation.

[@Novastar.SaberCombat]

Reflection is key. "Before I start, I must see my end. Destination known, my mind's journey now begins. Upon my chariot, heart and soul's fate revealed. In time, all points converge, hope's strength resteeled. But to earn final peace at the universe's endless refrain, we must see all in nothingness... before we start again." 🐲✨🐲✨🐲✨ --Diamond Dragons

[@planetmchanic6299]

What about your inner light? Phosphenes anyone? Nice vid dude.

[@baxterbella5730]

“Ever notice how light is the first thing we see when we’re born?” I’m out.

[@straunwagner6322]

Ever notice how light is the only thing you’ve ever seen?

[@Novastar.SaberCombat]

Reflection is key. 🐲✨🐲✨🐲✨ "Before I start, I must see my end. Destination known, my mind's journey now begins. Upon my chariot, heart and soul's fate revealed. In time, all points converge, hope's strength resteeled. But to earn final peace at the universe's endless refrain, we must see all in nothingness... before we start again." 🐲✨🐲✨🐲✨ --Diamond Dragons

[@amangogna68]

Great video and information !

[@kmundu3890]

At the timestamp 1:51, if it's a visible light moving through air and if the prism is made up of glass then the direction of the refracted beams are incorrect. They should refract downwards, not upwards.

[@christorres3487]

I like the background music! Interesting video!

[@InsaneCuriosity]

Glad you liked it!

[@user-dialectic-scietist1]

Don't forget that watching mean interaction of any beam with our detecting apparatus. So, that we see and one time is different from the other, isn't the light, but it is the interaction.

[@ValidatingUsername]

Now imagine when a photon hits an atom it is predetermined where that energy is going to dissipate into rotational energy and excitation emissions of photons that stem from the electron cloud pulsing in size and radiating out in all directions proportional to the pulse and the orbital it excites 😊

[@darwinlaluna3677]

And maybe lights and gravity can make the space to expand or construct

[@user-dialectic-scietist1]

The real meaning of temporal Double Slit Experiment is that the second beam which interact with the first, did the distance to the moment of the interaction in a speed 2 times the speed of light. If the speed of light was stable, then the two beams will not hit the one the other as the two beams have been produced at the same time..

[@InsaneCuriosity]

Great observation! However, it's important to note that in the double slit experiment, while the interference pattern might suggest superluminal effects, it actually arises from wave-like properties of particles, not from any physical entity moving faster than light.

[@user-dialectic-scietist1]

@@InsaneCuriosity No, the light's waves of the second beam are moving faster than the "regular" light's waves of the first beam, to have the result of the phenomenon of the Wave contribution, unless the first wave travels at 1/3 of the speed of light. There is another experiment in Philadelphia in 2010 and passed the light through a medium with a negative refractive index and thus achieved a speed of light 300 times. The problem is that how they measured it. And of course I'm talking about light and not any other material.

[@richardsanchez1716]

I have Walter Russell's book "The Secret of Light" which breaks everything down in great detail very deeply and profoundly.

[@johnbgibbs]

I got the Kindle sample, but it looks a bit verbose... For just a couple of dollars I can recommend "Does Physics need a reboot? ". Concise, rational common sense, with no need for enchanted, psychic particles. Give it a read, I would love to hear what you think!

[@alexandrekassiantchouk1632]

Do you know that light emitted (or reflected) by a particle is visible only at a very specific angle to the velocity vector of the particle (only if velocity=0 it is visible from any perspective). That is simple outcome from Einstein's Special Relativity. And that first time ever explained vanishing without any trace stars, observed for about 80 years by astronomers. Read "The Main Observation Problem, Challenging Astronomy, Solved Today" (and “Science of Visibility and Invisibility” link inside).

[@CUBETechie]

Redo of healer ist Rising of shield hero so wie myne es vorgestellt hat?

[@tedwalford7615]

At 0:33 you called light "invisible." Huh?!

[@cjbrenner13]

This is very well scripted and done well for a quick jog through the mysteries 😅 of light. 😎

[@fischer9001]

I love lamp

[@leonebritt4879]

I don't remember light being the first thing I saw when I was born🤔

[@baxterbella5730]

Trying to remember what the second thing was… 😂

[@joelhubeny7554]

talking about Old ancient stuff. What we call visible Light is a Small spectrum of Waves we can't see. Light Is Just a Waste Product of Energy transfer. The Lightning Bolt cracking the sky isn't Light but emits light. It Is the Negative Charged Electrons moving across the ionosphere. The Same negative charged electrons moving in Light LED Bulb and computer Processors Alternating voltage current down to a battery powered Smartphone. Visible Light a waste product of energy isn't needed in cosmos when you got Gamma waves humans can't see because even UV Waves from SUN blinds us imagine them X-rays being seen. A little bit past visible violet color and we go blind.

[@John-pp2jr]

Fresnel not FRENEL?

[@kaltkalt2083]

The s is silent

[@ONKTmetalband]

Please stop the background music ❤

[@InsaneCuriosity]

Less than this ?

[@SpectralAI]

I like the music.

[@Epoch11]

It's just too loud ​@@InsaneCuriosity

[@DaninVa-gt9nj]

Why do these creators seem compelled to add unnecessary music all the time? It's particularly irritating when watching a documentary on tv. There is a scene about nature and out of nowhere music starts. Would prefer natural sounds-birds singing, running water, a soft wind, etc. I usually mute the sound and turn on CC. This video is really interesting but somewhat complicated.

[@theirishman8518]

No, we enjoy the background music 🫡😉😏🤣

[@SpectralAI]

What if I told you that Max Planck was wrong? It’s all misinterpretation.

[@evanneal4936]

I'd tell you that same thing except that it's you instead of him who's wrong...

[@SpectralAI]

@@evanneal4936 And scientists today are just as closed minded as you.

[@robertanderson5092]

Actually Max Planck knew he was wrong. It was just a mathematical trick to make the calculation doable.

[@vitalitsanidis8271]

Background music is annoying Otherwise all the videos are so interesting

[@baranyiproduction]

Great video content! Please mix the sound again in order to hear clearly the narrator!! Such a big mistake!

[@brianrobinson8198]

The internet has a million pictures of Albert Einstein. Why did you use an AI generated picture of him?