Radiation Pressure | Physics with Professor Matt Anderson

Radiation Pressure | Physics with Professor Matt Anderson | M25-17

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Physics with Professor Matt Anderson

2 жыл бұрын

Did you know that sunlight can push on you? Kind of crazy, right. Turns out, if you put a big mylar sheet in space, the sunlight will push on it and accelerate it to 100,000 mph in about a year. Whaaaat?
Physics with Professor Matt Anderson

Пікірлер: 44

@ernstuzhansky Жыл бұрын

Great explanation. Many thanks!

@zachh6868 Жыл бұрын

I like your teaching style. You make it interesting

@roshnibatra9047 Жыл бұрын

Beautifully explained

@fizixx 2 жыл бұрын

Super! First time I heard about this kind of thing was about the time I started physics. Saw this in a book, but it was a flashlight that was turned on and the question was asking for the speed, or acceleration....I don't recall exactly, but I still have the book. I couldn't believe it, but here we are, at a time where we're sending things up into space to check this kind of effect. Very, very kewl 😎

@yoprofmatt 2 жыл бұрын

I agree. Wacky and fun. Cheers, Dr. A

@neeki10 Жыл бұрын

This was so clear explanation 🙌🙌

@jamesjohn2537 2 жыл бұрын

Thanks a lot i like your explanation and teachings, it's clear and precise for brain intakes... I wishes you teach me all of physics, I can understand every single bytes of problems encountered in it.

@yoprofmatt 2 жыл бұрын

Great to hear. Welcome aboard. Cheers, Dr. A

@jamesjohn2537 2 жыл бұрын

@@yoprofmatt thanks and cheers

@nishantyadav659 8 ай бұрын

nice explanation

@AR-fm9xt Жыл бұрын

Do RF waves have similar momentum transfer action? For example, can they be used to move objects just as solar radiation in the UV/Vis/IR spectrum is used in spacecraft sails? I see no reference to the radiation frequency mentioned here so I'm assuming this is limited to optical frequencies (optical tweezing etc.).

@virupannamedikinal Жыл бұрын

Thank you so much

@yoprofmatt Жыл бұрын

You bet. Cheers, Dr. A

@martinsoos 2 жыл бұрын

When we use a solar cell to collect light, are we collecting the spin energy of a photon as well as the momentum to get more energy out of electricity than we would from just reflecting light? I can get a lot of force out of a small solar panel and a water pump, and I just don't see that much force from the push of light.

@yoprofmatt 2 жыл бұрын

Light has considerable energy, but not much momentum. We know this, because when you stand in the sunlight, you get warm, but you don't get knocked over. Cheers, Dr. A

@martinsoos 2 жыл бұрын

@@yoprofmatt But where is that energy?

@martinsoos 2 жыл бұрын

Or I should ask, how much energy is in momentum and how much energy is in other forms?

@namename3130 2 жыл бұрын

@@martinsoos momentum isnt a form of energy

@namename3130 2 жыл бұрын

@@martinsoos the only energy a photon has is of its own form and is given by e = hf

@DragonHeart5150 2 жыл бұрын

In Outerspace, there is virtually no resistance, but there is a great deal of space junk and debris floating around that would shred the sails.. So, your question of why anyone would want to try this, stands. Humans are basically pigs. I thoroughly like your classes.

@yoprofmatt 2 жыл бұрын

Total pigs. You should have seen my room in college! Cheers, Dr. A

@Al-cynic Жыл бұрын

What is that 'slapinator 5000' in the background? more annoying than the MIFE in the lab I worked in.

@wolfdomination1905 Жыл бұрын

The fact he can easily write backwards alone impresses me.

@greenpewdiepie4207 4 ай бұрын

He’s not. The picture is inverted about the vertical.

@GP-qb9hi Жыл бұрын

How can light have momentum with no mass? In one sentence please.

@wolfdomination1905 Жыл бұрын

The very nature of energy is to move things, mass is basically the byproduct of this force of energy pushing in all directions there for creating resistance while being stationary or moving instead of being required to travel at the speed of light to create resistance, ps: ask chat GPT.

@GP-qb9hi Жыл бұрын

@@wolfdomination1905 I did: " Light can have momentum despite having zero mass due to its wave-particle duality, where its momentum arises from its energy and wave properties."