Can You Push Things With Light?


Mubashir Goraya
Mubashir Goraya

V good

Vor 5 Tage
Abhinav Prajapati
Abhinav Prajapati

No.

Vor 6 Tage
fury
fury

Drink every time he says back and forth

Vor 6 Tage
B.J. Hubbard
B.J. Hubbard

Guy in video: “Wow, it moved it!” Me watching that part of video: “no it dint, watch the video”

Vor 7 Tage
Demetre Devidze
Demetre Devidze

What I do not understand is that if we have a surface which is fully reflecting the light, how on Earth would the surface move because if the fixed number of photons hit the surface and they are all reflected back without losing any of their energy it means that shiny surface won't move, because if it moves where is the energy coming from.

Vor 11 Tage
Yassine Seghrouchni
Yassine Seghrouchni

4:27 😂😂😂😂😂 he didn t know that the photon has no mass

Vor 14 Tage
Sumit Dev
Sumit Dev

5:51 it moved because u have heat it with that laser so that heat created movement in molecules of that piece of foil so it moved Just wondering this be the answer

Vor 15 Tage
Mateusz Pluta
Mateusz Pluta

How can light have no rest mass while having a relativistic mass? The equation for relativistic mass gives 0 when you put in rest mass equal to 0

Vor 16 Tage
David King
David King

Yes.

Vor 16 Tage
Jackson McKenzie
Jackson McKenzie

What is he doing on YouTube he should be a college professor!

Vor 17 Tage
Jimi02468
Jimi02468

But wait a second. Light always travels at constant speed (aka light speed) so its kinetic energy will stay the same when it bounces off the reflective surface. So how can it increase the kinetic energy of the reflective object in the vacuum chamber when its own kinetic energy doesn't decrease at all? Is it creating free energy?

Vor 17 Tage
Gokul cool
Gokul cool

wiggle wiggle wiggle just a little bittle

Vor 20 Tage
Sun Li
Sun Li

May be why I find myself heavier in summer sunlight.

Vor 20 Tage
Swarochi Tathagath
Swarochi Tathagath

Make things float with light

Vor 21 Tag
Dibya Karmakar
Dibya Karmakar

Well could red light might had worked well as it has longer wavelength and disperses the least?

Vor 22 Tage
Hatif Rehman
Hatif Rehman

Can you please stop telling seintific suff 😟

Vor Monat
Snow
Snow

*begone unholy tape heathen*

Vor Monat
KK
KK

now try to turn on and off your light so that you sync up with the pendulum motion

Vor Monat
Su Tony
Su Tony

relativistic mass? I think it is the energy from the electromagnetic wave. E=hf. (plank constant times certain frequency.) This energy concert into mechanical energy causes the paper to move. Even though you tried to avoid the air friction because of the mechanical energy been converted is relatively small. It is very hard to see a clear pattern. Can you design another experiment to observe more clearly?

Vor Monat
Roni Ronald
Roni Ronald

Cool

Vor Monat
Hendri Nel
Hendri Nel

A photon books into a hotel. The bellhop asks him "may i take your luggage" and the photon replies "no i'm traveling light"

Vor Monat
ClickMe
ClickMe

Its the heat that caused it to move.. If it was the light it would have moved the instant you hit it with light. But you can clearly see it move 2 or 3 seconds later...

Vor Monat
ZenexGen TheInfintiy
ZenexGen TheInfintiy

Made it more easy that light has mass:- Just take an example of black hole. It has very much gravitational force that light is also pulled towards it. So if light has zero mass then there would be no attraction between black hole and light as product of the masses of the bodies is directly proportional to gravitaional force. So as there is interaction between light and black hole, therefore light has mass.

Vor Monat
giver cz
giver cz

So if u trap light in one space motionless then it has weight?????????????????????????

Vor Monat
giver cz
giver cz

Wtf is wrong whit u thats stupid

Vor Monat
Nagendra Ghimire
Nagendra Ghimire

Can we get greater movements using light pushing and resonance? Maybe we can light the reflector when it moves away and switch it off when it returns..

Vor Monat
Braiden Coker
Braiden Coker

Correct me if in wrong but I believe that you would have,to go at the speed of time in order to time travel which is several thousands times faster that speed of light which going the speed of time is impossible. Since you would have to go the speed of light at which point everything for theperson going the speed of light stops so you can time travel backwards if you go as fast as time as if you go faster then speed of light time stops but if at all possible to go the speed of time time would go back words since if your faster than speed of light at which time stops for you then going faster than speed of light would make time go back words

Vor Monat
Shubham Bairagi
Shubham Bairagi

We can actually push something with light because photons exhibit particle nature , so a reflecting body suffer force due to its momentum

Vor Monat
Hadi M
Hadi M

Can u slow down light

Vor Monat
onlinegamerz ßesƒren
onlinegamerz ßesƒren

If it pushes, can you make it swing with your laser making it strobe like on and off and on again so as instead of just pushing it once and makes it go back to still, you would actually swing it back and forth?

Vor Monat
Cool _ Cat
Cool _ Cat

You can change an asteroids course by painting one side and using light to move it. Also nice video

Vor Monat
ALABAS MANHELL
ALABAS MANHELL

hey bro i follow ur channel frequently and i think (not sure though ) that u made a mistake since that the momentum of photons can be expressed as p=h/lambda (or photon wavelength) correct me if im wrong but as always keep up ur amazing work bro ur channel is amazing

Vor Monat
Omar Khaled
Omar Khaled

But in the equation of relativistic mass you showed, relativistic mass depends on the rest mass which is zero in case of light

Vor Monat
Game Sound
Game Sound

Light cant push even air

Vor Monat
Jeff O
Jeff O

Air is completely transparent, so light passes right through it. There's nothing for light to push against, except for dust particles in the air.

Vor Monat
Hansi Mazak Aur Gyan
Hansi Mazak Aur Gyan

U r genious

Vor Monat
Jens Philip Höhmann
Jens Philip Höhmann

The term 'relativistic mass' is somewhat misleading because m(γ-1) the 'mass' of the kinetic energy rather than the mass of the body . Moreover, the 'relativistic mass' would have to be a tensor rather than a scalar because it's harder to accelerate a body longitudinally than transversally. In more modern terms, the rest energy of a body (/c², as we use to measure temporal abd spatial differences in different units) is called its mass. A more general formula is (1) E²/c² – p² = m²c² where E is the body's total energy and p is the absolute of its momentum. mc is the MINKOWSKI 'norm' of the four-momentum, and (1) even holds for photons.

Vor Monat
Muhammad Helmi Hibatullah
Muhammad Helmi Hibatullah

*BACK AND FORTH* *BACK AND FORTH* *LETS SAY IT AGAIN* *BACK AND FORTH* *BACK AND FORTH*

Vor Monat
David baker
David baker

Light doesn't have any mass so it can't be pushed

Vor Monat
Tezza's Tutorials
Tezza's Tutorials

yes but it has momentum due to its energy

Vor Monat
egoknot9
egoknot9

Okay, today (insert what he’s doing now here)

Vor 2 Monate
Henry Herreman
Henry Herreman

Troll physics

Vor 2 Monate
Arpita Sinha
Arpita Sinha

Can you please tell me from where did this bought that big powerful flashlight

Vor 2 Monate
No Soup for You
No Soup for You

He actually explained the definition of "push"... 😂😂

Vor 2 Monate
Ray Toshlyra
Ray Toshlyra

Wait how do you catch light in a box with mirrors and know it is there ? i mean its closed? and if you use see through mirrors, would you only need to feed it with light and it keeps itself being lit up? XD i mean i always wondered what happens if you put light in a perfect sphere which is a mirror on the inside layer !?

Vor 2 Monate
rdooski
rdooski

A light sail is one of the fastest things humans can currently build. It just takes awhile to get up to speed.

Vor 2 Monate
Rob the Animator
Rob the Animator

There used to be demonstrations outside optometrists' shops or in science centres, which had a light bulb with small foil wheels nearby, and the wheels closer to the bulb spun faster. I think the idea was to suggest the wheels were spinning due to the pressure of the light, but they were actually spinning due to the temperature differences in different parts of the wheels.

Vor 2 Monate
FilipMlgGamerPr o
FilipMlgGamerPr o

Can you break crystal glass with light?🤔

Vor 2 Monate
Scott Koningisor
Scott Koningisor

He's using a FASCIS! Someone tell Martin . . ..

Vor 2 Monate
Parth Sharma
Parth Sharma

How can light put its momentum on a Reflecting surface? I think all momentum will be transferred to a non reflecting surface... because in reflecting surface ....light is getting its 100% momentum back ...but in non reflecting surface light is being absorbed continuously so may me it is transferring the momentum at that time....pls think and reply....and correct me if am wrong..🙂

Vor 2 Monate
Jonah Khalifa
Jonah Khalifa

Here’s the problem with getting a particle at rest: Since the Earth is always moving at a high velocity, and the galaxy is moving much faster, particles will always be moving. Therefore, a rested particle is impossible to achieve. Even if you were able to get out of the galaxy where there is no movement, since the universe is always expanding, the particles will still be moving.

Vor 2 Monate
István Szennai
István Szennai

just a note: this so-called ‘relativistic mass’ concept really should be dropped, because it is very misleading...even Einstein discouraged using the term. Here’s the catch: let’s assume that you are accelerating an object close to the speed of light. One would (incorrectly) assume that due to the increase in ‘mass’, the object bends spacetime around it more than it initially did. Well, no... Further reading: http://www.reddit.com/r/askscience/comments/47uj27/can_an_object_become_a_black_hole_by_moving_fast/ http://physics.stackexchange.com/questions/95023/does-a-moving-object-curve-space-time-as-its-velocity-increases

Vor 2 Monate
Sudeep dm
Sudeep dm

can we pass sound particals through light please answer me

Vor 2 Monate
mohamed kamel el dobosh
mohamed kamel el dobosh

Brilliant

Vor 2 Monate
Dj Sushi
Dj Sushi

Of course the scale is getting LIGHTER. Get it? 3:28

Vor 2 Monate
DAVINDER SINGH
DAVINDER SINGH

Education is light 💡 , it is very heavy. 😭

Vor 2 Monate
alex tworkowski
alex tworkowski

I think that the common opinion is that light CANNOT exert any force. Apparent force is due to surface heating and evaporation of contaminants or the acceleration of gas molecules at the surface. This result may be real or not. Unknown to me at this time.

Vor 2 Monate
Simon Van Hoogstraaten
Simon Van Hoogstraaten

Wow, it gets lighter when you shine light on it! Mindblowing XD

Vor 3 Monate
Shekhar
Shekhar

Einstein was always great

Vor 3 Monate
Manav Dodia
Manav Dodia

I want to buy that powerful laser light. From where can i buy it?

Vor 3 Monate
Lolibob Pop
Lolibob Pop

Your bed is lava 5 4 3 2 1 Like if you are too lazy🙂🙂🙃🙃🥳

Vor 3 Monate
Shane
Shane

Can you cook something with the laser? I'd like to watch that

Vor 3 Monate
Applanate Earth!
Applanate Earth!

Force isn't as you stated a change in momentam over time..... Blah blah blah.... Just random words..... Nonsense.

Vor 3 Monate
Nikola Jurenić
Nikola Jurenić

Ok, today...

Vor 3 Monate
Zyrom121
Zyrom121

Stupid comments VS “good” comments.

Vor 3 Monate
greg77389
greg77389

So does this mean the light is also exerting 1 microgram of force on the laser you're holding but in the opposite direction? So you could literally make a light-based propulsion system that just fires a powerful laser opposite to the direction you want to go?

Vor 3 Monate
sanjuansteve
sanjuansteve

If the mirrors in the box were less than perfectly efficient, the box once closed with the added mass of light would lose that mass over time as the photons eventually all got absorbed as heat into the box and lost their motion?

Vor 3 Monate
Aditya Yempalle
Aditya Yempalle

bro , pls explain the equation Mrel = M*(( 1-V^2)/C^2)^1/2 its the one you talked about earlier at 1:40 .

Vor 3 Monate
Torrey Whiting
Torrey Whiting

2:38 so could you make a small black hole or star or something?

Vor 3 Monate
aggsimalone
aggsimalone

Have you guys heard of the new way (theoretically) to make a rocket move in space? By shooting microwaves at a piece of copper or something? It was in the news today. Maybe NASA saw this video...

Vor 3 Monate
Soharab Soharab
Soharab Soharab

Can we push photons by any kind of field like magnetic or electromagnetic field?

Vor 3 Monate
Jeramie Curtice
Jeramie Curtice

Nasa is currently working on sending satellites to alpha Centauri, which is 4 light years away, in just 20 years travel time. They will use lasers to push mini satellites all the way there.

Vor 3 Monate
Canal Ten Thousand
Canal Ten Thousand

This is what they want to do with the Solar Sail right? Hit it with a huge laser which will give it a very high velocity

Vor 3 Monate
Spaceman Savvy
Spaceman Savvy

it got lighter cuz u added light to it

Vor 3 Monate
Matthew19002
Matthew19002

Is it possible that the foil expanded on one side causing a change in the weight distribution, causing any amount of potential energy in the thread being held back by friction in the fibers to release?

Vor 3 Monate
Jim Stanley
Jim Stanley

NASA already have solar/light sails that work. So, a good question (you may want to consider for your channel) is how do they work if light has no mass.

Vor 3 Monate
Out of Rhythm
Out of Rhythm

If only i found this channel in my high school.

Vor 4 Monate
She's Sometimes Double Chocolate!
She's Sometimes Double Chocolate!

How do you figure that light in the vacuum box isn't just giving that string thing some heat that makes it move instead of moving it with just the pure light?

Vor 4 Monate
She's Sometimes Double Chocolate!
She's Sometimes Double Chocolate!

K, why do you say "5000 milliwatt LASER," when you could just say "5 *watt* LASER"?

Vor 4 Monate
She's Sometimes Double Chocolate!
She's Sometimes Double Chocolate!

But it doesn't SOUND more powerful to a brain that's already got it figured out. So using a figure like this just makes it SEEM stupid, or if that were what his goal was then it would make it SEEM like he thought we were dumb. Besides, I don't see what motivation he'd have for making it SOUND "more powerful" (to you) anyway. Besides that, I think he has already gotten the clue and in his later videos he does just call it his 5-watt laser now. So let's just see how he answers this question that I posted before his newer videos were posted.

Vor Monat
JustMe_ Here
JustMe_ Here

Maxx Fordham! yeah ik they are the same i said to make it SOUND more powerful to a human brain it's just slightly deceptive because a bigger number value SEEMS larger even when the unit of measurement changes especially if you aren't used to hearing it

Vor Monat
She's Sometimes Double Chocolate!
She's Sometimes Double Chocolate!

+JustMe_ Here: No, because they're the same thing, except that canceling a "thousand" out with a "milli-" just sounds stupid.

Vor Monat
JustMe_ Here
JustMe_ Here

Maxx Fordham! to make it sound more powerful

Vor Monat
She's Sometimes Double Chocolate!
She's Sometimes Double Chocolate!

OK, then how come some people say what sounds like the opposite of this, that the faster you go, supposedly "the *smaller* you get"?

Vor 4 Monate
Eni Doku
Eni Doku

hey light has mass , its build of concatenated electrons

Vor 4 Monate
Ansh Agarwal
Ansh Agarwal

If rest mass is zero and m(rel) can be calculated using the m in numerator But m is zero therefore m(rel) is zero Plz explain

Vor 4 Monate
Supraj Upadhyayula
Supraj Upadhyayula

You should try turning the laser on and off in sync with the torsonal pendulum

Vor 4 Monate
Deni Adhish
Deni Adhish

You were awesome Thanx for the facts

Vor 4 Monate
stephen madl
stephen madl

Nice job here. Cody's Lab has a pretty good one that allows him to actually measure the force.

Vor 4 Monate
F Mills
F Mills

Moon light is cooler than moon shade (about 3 degrees F on a warm evening). Do a video explaining that!

Vor 4 Monate
Marcus Engstrom
Marcus Engstrom

Radiometer

Vor 4 Monate
Frazer TGB
Frazer TGB

Why does violet light move a crooks radiometer whereas red/IR does not? Are you suggesting that some EM radiation does not have momentum and some does? Ken Wheeler demonstrated this using a crooks radiometer and it seems to contradict the "momentum" theory.

Vor 4 Monate
Frazer TGB
Frazer TGB

Light has no resting mass because it is never at rest. It only exists moving at the speed of light where time equals zero

Vor 4 Monate
M.r. Siam
M.r. Siam

Seriously.Dont you know That we can get super low temps by using lasers. By shooting lasers at opposite direction of moving atom you make the atom almost freeze. Thus less temps

Vor 4 Monate
Don’t drink And drive
Don’t drink And drive

The experiment starts at 3:12

Vor 4 Monate
Toasted Kidd
Toasted Kidd

Cloak and dagger face ass

Vor 4 Monate
VexStep [GD]
VexStep [GD]

Is this why when we are outside during summer we feel slower?

Vor 4 Monate
Sanjoli Gupta
Sanjoli Gupta

Good luck pushing things around with a torch...... May the force be with you!

Vor 5 Monate
Noel William
Noel William

Sanjoli Gupta menforce ke bare me baat kar rahi hai Kya!?

Vor 7 Tage
Seamour Butts
Seamour Butts

Yes but only with a highly concentrated laser as light is matter so it has mass and can push things. The only reason that it cannot be seen is air resistence but has been seen in experiments. This is how scientist plan to visit the closets star to us(excluding the Sun) by using the suns light to pust very light shuttles with a camera and a large foldible tin foil sheet to increase surface area. And because there is no air in space, air resistence will not effect it and by the time it reches the closet star to us, it will have a speed 25% the speed of light.

Vor 5 Monate
Game Star
Game Star

at 1:10 you pushed my brain away..

Vor 5 Monate
Brooklyn The Vix
Brooklyn The Vix

*god has returned*

Vor 5 Monate
Redemx
Redemx

We also can know that light has mass because a black hole can effect it. And gravity only effects things with mass

Vor 5 Monate
Paul savage
Paul savage

Your so boring man

Vor 5 Monate
mgrimm21
mgrimm21

so the sun puts out around 1/4 pound of light on the earth every second, if my math is correct.

Vor 5 Monate
X Sans Nom
X Sans Nom

you can heat up stuff using light, then a wind creates and then pushes stuff

Vor 5 Monate
The Growdie
The Growdie

Who knew the answer to this but watched it anyway 😭

Vor 5 Monate

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