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Relativity The correct analysis is that space (x = vt) is not included in the equation to be solved for the "time dilation" equation. (ct')^2 = (ct)^2 + (vt')^2 (solve it for t' for yourselve(s) to understand) and note that this equation cannot be generated from the "space" equation for length in first order (ct') = (ct) + (vt') (draw it on a piece of paper). Hint: If space doesn't exist, the twins don't go anywhere; one of them (the imaginary one) just gets fat in his/her imagination (t'). Which is why Hawking hints that time must be imaginary, but never says why. "Yesterday upon the stair I saw a man who wasn't there He wasn't there again today Oh, how I with he'd go away" - Ogden Nash See my post at "From MM Experiment to STR" at physicsdiscussionforum "dot" org That is, Fermat's Last Theorem is valid for the case n=2 for all positive real numbers c^2 <> a^2 + b^2 since in second order (I repeat, sigh. ad infinitum, ad nauseam) c= a + b c^2 = [a^2 + b^2] + [2ab] (Binomial Expansion, proved by Newton) <> [a^2 + b^2] (why) figure it out and you will be enlightened....

Almost makes you wonder if there is really just one photon that exists.

Why and how could be there are so many, many, countless things are exactly identical ? I mean the element H.

If determinism isnt real then i should be able to shoot fireballs from my hand and timetravel is possible

Earth’s orbit only varies by 5 million km, so the earth speed won’t affected much

I just tuned in to you and am in the procces of deciding if you brilliant or...

I like to think of stars as neutron factories.

Hello, I have a question, when you say atom is giving out its light from the original light (at around 2:57), does the new light from atom gonna make neighbouring atom continue to emit the new light?

Activating energy would relate to entropy which would relate to the universe of things.

You said that it goes from Helium to Carbon which skips some elements. Why are those elements skipped?

May DC na pala good good kala ko AC nalang lahat ng induction motor

Everything is multiple degrees of vibrational & frequency levels of ‘Reality’ ? A truely excellently presented video with lovely touches of humour

13.02 min the “box” represents the ‘infinite (quantum) potential field’ which is possibly what the entire Kosmos ( Cosmos ) is ?

5.04 min ‘Wave’ as disturbance perhaps better understood as ‘vibration’ ?

OK. Mass warps spacetime. Fascinating. But why?

Holy shit life is a wave a slow vibration bill hicks was on it:-) thank you tool for bringing bill hicks to ny attention and thank you Mr science:-)

If the human body is approx. 60-75% water. And the elements in water is 2/3 hydrogen, then 40-50% of our body is as old as the Big Bang! 13.8 billion years old. 🤯

If the universe could speak to us, it would have a very squeaky, high pitched voice. ...I'll get my coat.

I have a question, I've heard some people explain gravity in general relativity as somehow having to do with "the ground accelerating upwards" towards you? Do you happen to know what exactly that's all about and how it fits into the entire spacetime thing?

Surely not all protons (hydrogen) are big bang remnants, right? What about protons formed from high energy collisions? Or neutron beta decay? Am I missing something?

what an entertaining and informative format, thank you, great show!

More Emily please

When I'm trying to cut calories I enjoy iπ.

So what would happen if a star was large enough to make it past that stage

is the direction of electric power (potential difference) parallel with the poynting vector?

Crazies Nick and Em have such chemistry on screen!

So well done. I am teaching children of QuantumQid about Feynman Diagrams and this is the best video I have seen.

I think it comes down to communication windows. The distances we would be talking about would leave any species able to detect us looking at an earth that doesnt exist anymore, since it is in our past. And it has only been very recently, relatively speaking, that we were able to produce signals that would indicate intelligence high enough to communicate. That means that essentiallu anything futher out than about 80-100 light years would see a species unable to utilize even radio to any large extent.

I know like this: there are 4 forces acting on an airplane: drag comes from air resistance, lift comes from forward motion of the airplane, thrust comes from the engines and weight comes from gravity. When the lift comes from forward motion becomes greater than weight comes from gravity, the airplane get lifted up

I use the ball and stick model

It is good to have two people explaining, because some questions and explanations would not come up otherwise. Thank you for this video.

If the mathematician can utter "the limit exists" and for that to have meaning, then yes pi exists.

The electrons (current) moves the emf (voltage) is static. The product of the two is the power(watts).

Great video! Many videos talk about stellar nucleosynthesis but this video did awesome! I found out that the transition from collapsing star to neutron star is quick. Good for the poor dying star.

Exceptional

Not sure if I have this right. The heavier, rarer elements are not actually created during the neutron star merger, but by the released neutrons interacting with existing elements elsewhere in the universe? The neutron capture is not at the location of the neutron merger?

I'm still n9t getting it. Roughness and smoothness are not orthogonal: one is the complement of the other. I know it's just a metaphor, but isn't this simply representing 'roughness' as an angle, with 0 being totally smooth, and π/2 being totally rough ? Given that we have a fixed hypoteneuse, haven't we just replaced 'roughness' by an angle ? What is the point of this being a vector: we have a given radius (1) and a known X value. This determines unambiguously the quantity along the Y axis. Also, what's with the detector box ? Are you saying that the box contains an explicit polisher or roughener, to manipulate the incoming particle, just so it can meet the output criteria ?. It just sounds like a logic gate (say a non-inverting buffer). Give it a definite 100% voltage and you'll get 100% out. Same with 0% in and 0% out. Give it any intermediate voltage and it'll 'change' it to either 0% or 100%, just to satisfy the ouput requirements. Is my understanding correct ?

Hmm ... trying to decide if something exists without first examining the concept of "existence" itself. While you're at it, might want to think about whether the concept of an actual infinity makes sense, since for irrational numbers to exist, infinitesimals must exist. But modern conception of calculus rejects infinitesimals in favor of limits. Infinitesimals are actual infinities, limits are potential infinites. Seems to me, that when we talk about irrational numbers, we are talking about limits.

When I was studying geometry in 7th grade, my uncle asked me to say something geometric. I said , “πr^2”. He said, “no, pie are round”.

love the video, but the "good ol' Hawking" made it kinda clear that this came out before the Epstein list was released. It sucks that good ideas like his are going to be tainted by his personal actions.

So rarely do physics videos explain "we call it x but it isn't actual x". I'm reminded of your video re black hole evaporation and the fact you made it made sense. Not just made sense to ME but made sense grammatically. Every other freaking video talked about a black absorbing 1 of a virtual pair of particles... Hence black holes evaporate. Full stop. 🤯 😊 Anyway, you're an exceptional educator IMO.

Only 5 elements are necessary for the fundamental machinery of biochemistry. Carbon Hydrogen and Oxygen are required for proteins. These combined with Nitrogen makes up DNA or when combined with Phosphorus instead of nitrogen, we have the lipid membrane.

now tell me what's the REAL source of time and time dilation

Fantastic content - the CZcams algorithm decided to recommend this video to me while having breakfast. I think most people are amazed at how fast light travels when light actually moves at the speed of a tranquilized snail (or slower) when discussing cosmic distances. Even Star Trek tried to show how slow the Enterprise travels at its highest warp speed in the episode "By Any Other Name". The scouts from a world in the Andromeda galaxy commandeered the Enterprise to return home. How do we measure the distance of an object constantly moving away from us at a rate that increases the further away from us it is and the light we're using to measure the distance is the light from a position closer to our location? Watch this content :)

tehcnically qal;l numnbers repate all ending is repeating zeros

why ?

Do you know the electron cloud model? It shows the electron cloud surround the nucleus

I've enjoyed so much reading your book!!!!! Thanks Nick!!

Great explanation! Now, why the heck does every (hot) matter emit such waves?!

So if you know the redshift of the distant object, you can correct for the expansion since the light left it to determine how far away it actually was when the light left it. ?