Dear Dr. Neil Turok, I have a question, and I'm hoping you can answer it with the simplicity it deserves. It seems complicated when, at the fundamental laws of physics level, it should be simple, but it's not. I'm not sure about what is happening in the following described scenario. I'm sure you do. -- Thank you in advance! The [elongated] question (sorry): White light has all of the visible light frequencies in it, and when we look at white light we see white light. We can change the frequency using several methods, but changing the frequency of light (the color of light) using speed isn't one of those methods. Moving toward or away from an object shouldn't change the frequency of that light based on motion to arrive to any particular frequency. No matter the speed of motion, the speed of light is always constant. Therefore, a galaxy moving away should still be the inherent color of whatever majority it's overall light spectrum is; a blue galaxy, a red galaxy, a yellow galaxy, etc... Whether it is moving toward us or away from us (the direction of its motion) should be irrelevant as to what color it is since the speed of light, no matter the frequency, is constant. Therefore, how does motion have an impact on [the speed of light's frequency, then], when the speed of light is the speed of light no matter what? Motion should not have an impact on the frequency of light based on motion [speed]. If I am still wrong, why am I wrong? If I am correct, then what is going on with the speed of light C when it comes to the motion of a galaxy? Do galaxies moving toward us (Andromeda) also have a change in color to blue shift rather than red shift? If so, how? How is the frequency of light different from the speed of light? A red star is a red star because that is the frequency of a red star. A blue star is a blue star because that is the frequency of a blue star. But when it comes to the inherent color of a galaxy, it should remain its inherent color regardless of its motion. A blue star doesn't shift to red because it's moving away from us. Or, do they? If they do, how is this possible when the speed of light is unaffected regardless of the direction and speed of motion?
Hi, i'm a physics student and i think I can clarify this to you. An object that emits light at and is moving away from you will be redshifted while any object moving toward you will be blue shifted. So if you are moving away fast enough from a white light you will see it red. The physics it's analogous to what happens with sound waves, except that for sound waves there is a preferred coordinate system, etc... The frequency and the speed of light are two independend properties: the speed of light is always c while the frequency can be wathever you want (any color). This phrase you said "[the speed of light's frequency, then]" makes no sense, because frequency is not a property of the speed! Frequency is a property of light, not it's speed. "If I am still wrong, why am I wrong? If I am correct, then what is going on with the speed of light C when it comes to the motion of a galaxy?" Experiments proove you wrong. The speed of light is C always. " How is the frequency of light different from the speed of light? " The frequency is the number of oscillations in one second and has units 1/second. Speed is the distance traveled in one second and has units meter/seconds. As you can hopefully understand those are quite different things. You can have things, like a biliard ball, that have speed but no frequency and viceversa you can have things that have no speed but have frequency, like the string of a guitar that's emitting sound, but is not going anywhere. Light has both speed and frequency, like sound. "how is this possible when the speed of light is unaffected regardless of the direction and speed of motion?" Nobody knows. It's the way it is.
@@sebastiantum12 Thank you for taking your time to reply to my questions. I understand now about frequency and speed being two different things. Thanks!
Because i am so many problems stuck here in my head, sorry but i need to leave u sir’s my highest respect to all of you, all of u have a wonderful day, good bye.
Dr. Turok, I love your lectures and have benefitted greatly from them. One question, though. In this talk you seem to say that gravitational waves do not exist, while in others you say they do. Do you actually owe Dr. Hawking 200 Canadian Dollars?
Yes that is true, but his videos are 4 to 7 years apart with also comes with loads of new scientific data inbetween. Hence why the contradictions sometimes, but he also mentions it in this video specificaly.
Well the 'absence' of gravitational waves' at 10:50 mark didn't come true did it? Not consistent with zero after all. LIGO feb 11 2016 they were detected.
They will say anything such as fusion is possible on earth and it is not. to extract more funding from politicians. it is all Corporate driiven as much as science.
It’s easy to say to change my phone, u made me broke, even in my work the supervisor always watched like they want to eat me, because of u, and i feel harassed, that is y i dont want to work, so what’s next
Really the universe is more and more mysterious. Reminds me of what Christ said to his apostles “are you still without perception?” Physicists need to study people like St. John of the cross or st Teresa of Avila. Or Meister Eckhart. Profoundly perceptive people.
Yes, it makes you wonder just how on Earth Jesus managed to find such a deeply idiotic bunch of followers. It may even have been the case that only God himself could have managed such a feat. It almost beggars belief that these guys could have hung on His shoulder for that long and yet remained essentially clueless right up to his death. Yet that's the picture that history paints!
A room full of bright people who are completely thick. Now I will explain. Listen to this lecture and what do you hear? 1: Neil"s voice sounds raspy. 2: the audience is coughing. What does this 8ndicate? The oxygen levels in the room are low because the gas ratio is incorrect and dangerous to health.
Dr.Neil often has his specific view and he can explain it, very interesting ,very open minded, thank you.
Absolutely outstanding lecture, what a pleasure to listen.
Great lighting
😂😂😂
This guys confidence is very persuasive, but I won't pretend to understand enough to know whether I'm just being buffaloed.
Another fascinating lecture.
Dear Dr. Neil Turok,
I have a question, and I'm hoping you can answer it with the simplicity it deserves. It seems complicated when, at the fundamental laws of physics level, it should be simple, but it's not. I'm not sure about what is happening in the following described scenario. I'm sure you do. -- Thank you in advance!
The [elongated] question (sorry):
White light has all of the visible light frequencies in it, and when we look at white light we see white light. We can change the frequency using several methods, but changing the frequency of light (the color of light) using speed isn't one of those methods.
Moving toward or away from an object shouldn't change the frequency of that light based on motion to arrive to any particular frequency. No matter the speed of motion, the speed of light is always constant. Therefore, a galaxy moving away should still be the inherent color of whatever majority it's overall light spectrum is; a blue galaxy, a red galaxy, a yellow galaxy, etc... Whether it is moving toward us or away from us (the direction of its motion) should be irrelevant as to what color it is since the speed of light, no matter the frequency, is constant.
Therefore, how does motion have an impact on [the speed of light's frequency, then], when the speed of light is the speed of light no matter what? Motion should not have an impact on the frequency of light based on motion [speed].
If I am still wrong, why am I wrong? If I am correct, then what is going on with the speed of light C when it comes to the motion of a galaxy?
Do galaxies moving toward us (Andromeda) also have a change in color to blue shift rather than red shift?
If so, how? How is the frequency of light different from the speed of light? A red star is a red star because that is the frequency of a red star. A blue star is a blue star because that is the frequency of a blue star. But when it comes to the inherent color of a galaxy, it should remain its inherent color regardless of its motion.
A blue star doesn't shift to red because it's moving away from us. Or, do they? If they do, how is this possible when the speed of light is unaffected regardless of the direction and speed of motion?
Hi, i'm a physics student and i think I can clarify this to you. An object that emits light at and is moving away from you will be redshifted while any object moving toward you will be blue shifted. So if you are moving away fast enough from a white light you will see it red. The physics it's analogous to what happens with sound waves, except that for sound waves there is a preferred coordinate system, etc... The frequency and the speed of light are two independend properties: the speed of light is always c while the frequency can be wathever you want (any color).
This phrase you said "[the speed of light's frequency, then]" makes no sense, because frequency is not a property of the speed! Frequency is a property of light, not it's speed.
"If I am still wrong, why am I wrong? If I am correct, then what is going on with the speed of light C when it comes to the motion of a galaxy?" Experiments proove you wrong. The speed of light is C always.
" How is the frequency of light different from the speed of light? " The frequency is the number of oscillations in one second and has units 1/second. Speed is the distance traveled in one second and has units meter/seconds. As you can hopefully understand those are quite different things. You can have things, like a biliard ball, that have speed but no frequency and viceversa you can have things that have no speed but have frequency, like the string of a guitar that's emitting sound, but is not going anywhere. Light has both speed and frequency, like sound.
"how is this possible when the speed of light is unaffected regardless of the direction and speed of motion?" Nobody knows. It's the way it is.
@@sebastiantum12
Thank you for taking your time to reply to my questions. I understand now about frequency and speed being two different things. Thanks!
Love dr. Turok 's lecture 🙂
10:48 Simplicity looks complex.
😕
15:17 Simplicity looks _very_ complex.
😵💫
Because i am so many problems stuck here in my head, sorry but i need to leave u sir’s my highest respect to all of you, all of u have a wonderful day, good bye.
Dr. Turok, I love your lectures and have benefitted greatly from them. One question, though. In this talk you seem to say that gravitational waves do not exist, while in others you say they do. Do you actually owe Dr. Hawking 200 Canadian Dollars?
he's only talking about gravitational waves generated by inflation, which should be detectable in the microwave background!
Yes that is true, but his videos are 4 to 7 years apart with also comes with loads of new scientific data inbetween. Hence why the contradictions sometimes, but he also mentions it in this video specificaly.
NOTE to coughing idiot(s). Please leave the room and watch the video online afterwards. Thanks.
No backwards in time no future in time, it is always now present now, u can see me three seconds back future now
Oh am i got perfect score?
What is wrong?
I am so tired, of thinking how to pay my car , i am late i month, yesu can check it
Of first sign, y some ppl don’t know how to count the right, but they know how to count the wrong
Well the 'absence' of gravitational waves' at 10:50 mark didn't come true did it? Not consistent with zero after all. LIGO feb 11 2016 they were detected.
His bet is against gravitational waves from the big bang not regular gv waves detected by the Ligo.
They will say anything such as fusion is possible on earth and it is not. to extract more funding from politicians. it is all Corporate driiven as much as science.
Y do u want me to change cell phone?
Local: Lanuvio (IT) 7/10/2020
that guy's coughing ruining it
3 years and 12 comments, let's do the math, Damm this is all wrong.
💚💚💚💚💚💚💚
It’s easy to say to change my phone, u made me broke, even in my work the supervisor always watched like they want to eat me, because of u, and i feel harassed, that is y i dont want to work, so what’s next
Really the universe is more and more mysterious. Reminds me of what Christ said to his apostles “are you still without perception?” Physicists need to study people like St. John of the cross or st Teresa of Avila. Or Meister Eckhart. Profoundly perceptive people.
Yes, it makes you wonder just how on Earth Jesus managed to find such a deeply idiotic bunch of followers. It may even have been the case that only God himself could have managed such a feat. It almost beggars belief that these guys could have hung on His shoulder for that long and yet remained essentially clueless right up to his death. Yet that's the picture that history paints!
A room full of bright people who are completely thick. Now I will explain. Listen to this lecture and what do you hear? 1: Neil"s voice sounds raspy. 2: the audience is coughing. What does this 8ndicate? The oxygen levels in the room are low because the gas ratio is incorrect and dangerous to health.
Don’t u say that don’t worry cause u r reach, look at me