As simple as possible, but not any simpler! Science and technology updates and summaries. No hype, no spin, no tip-toeing around inconvenient truths. News each Wednesday, new topical video each Saturday.
Sabine Hossenfelder has a PhD in physics. She is author of the books "Lost in Math: How Beauty Leads Physics Astray" (Basic Books, 2018) and "Existential Physics: A Scientist's Guide to Life's Biggest Questions" (Viking, 2022).
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5:20 You're tearing me apart, Lisa!
I have no trouble saying these are all coincidences. No theory to point otherwise is proposed, so what is the point of this video?
Start to be intelligent, Sabine. The Energy Watch Group (EWG), a coalition of scientists and politicians which analyses official energy industry predictions, claims that the IEA has had an institutional bias towards traditional energy sources and has been using "misleading data" to undermine the case for renewable energy, such as wind and solar. A 2008 EWG report compares IEA projections about the growth of wind power capacity and finds that it has consistently underestimated the amount of energy the wind power industry can deliver. PHEVs are a stupidity...and...next to the European, US and Japanese BEV trash...are the ones burning all of the time. Learn to build BEVs like China, Tesla and South Korea...or move out of the way legacy auto from Europe, the USA and Japan. Sore losers.
i would imagine there is some kind of link, there has always been some kind of link between phenomena we can't explain, when we find the explanation.
Sabine is pulling our legs with this episode. It should have come out on April 1st.
Thanks!
Larger transformers to supply the increased load also mean new transmission lines to reduce the losses!!!
How many do I remember ? Well, that is sigma 10… None🥴 In REALITY, I reason that that ALL “knowledge” is, as Neil deGrasse Tyson put it, “We know enough to think we are right but not enough to know we are wrong!”. One only need to look into history for all the “science” we reasoned at the time were “absolutes” but further knowledge proved us WRONG. See, in Astrophysics, it seems every other day we are “discovering” things that (by our current knowledge) can't exist. I would point to the reality (as we know it now) that “absolutes” are at best Mathematical notional Abstractions and don't exist in reality. I would postulate that to KNOW EVERYTHING, WE WOULD NEED THE 'ENERGY' (information) OF EVERYTHING…. We would BE everything. Because I'm human (well, in theory 🤔) I tend to accept that unless I can draw a line between what affects us I distrust its existential benefit. i.e., based on what we know hard prove at the moment, everything else is idle speculation. e.g., cosmic space (space travel). I could fill pages on why it is unwise, highly unlikely we will benefit the finite world/ people who have evolved in that 1G specific environment. See cosmic rays et al. and the limited time we can exist in space. Then we need to do a realistic cost benefit analysis. See the millions of people today who are living in conditions and existential threats that most viewer avoid thinking about. The proven Probability of Anthropomorphic Accelerated Global Climate change, that isn't helped by the resources, and real consequences. Due to theoretical, non life preserving emotional curiosity Verses the unpreparedness we see daily as consequences of natural Disasters. To be fair, you achieve more to people by being a science communicator than as a theoretical Astrophysicist. What is the good of knowledge if, meanwhile, the world destroys its self ?
maybe i'm just not bight enough to see where i'm going wrong, but the thing that gets me is, why can we square things? why is it E = MC2 and not E = MC almost but not quite 2 ? why does the inverse square law work, why isn't it the "almost" inverse square law??????
When you put fertile numbers next to other fertile numbers, you get more numbers? Coincidence? I stubbed my toe on an old hard drive full of numbers this morning? Coincidence?
Those are just numerology. The size of the universe, as we know it, is a huge variable with time. Some real coincidences are: 1. The "m" in F=ma at low velocities is the same as both of the "m's" in F = G m1 m2 / (r*r), also at low relative velocities and gravitational fields/spins, charges, etc. This is more than a coincidence. It's a huge mystery. 2. The rate of recession of the moon from the Earth is roughly equal to (on the same scale as) the Hubble constant
i keep saying, the universe relies on coincidence, all those atoms of hydrogen bumping into each other, no different than me meeting my wife at the tube station.
For our universe to exist these “coincidences” must also exist. Change one and… poof! So, perhaps not coincidences at all but a necessary feature of the only possible universe that can exist. One universe that came from a nothing that had the “features” that would allow the only universe that could exist, to exist. So, a state before the universe, the universe, the end of the universe and back to the “original state”. Rinse and repeat.
They didn't take you because of your political agenda.
You forgot - Stressed spelt backward is Desserts and Dog is God
none of these are stranger than the dirac large number hypothesis. The reason it is stranger is it shows a coincidental matching up of two seemingly unrelated ratios of natural constants. However, all of these are only a matching of a single ratio of natural numbers with a mathematical simplicity. 5pi etc. Not nearly as interesting as the large number hypothesis. Disappointed you didn't mention it. If I remember correctly, the large number hypothesis is the observation that the ratio of the proton radius and the observable universe is equal to the ratio of the electric force and the gravitational force, in a hydrogen atom, which is equal to the square root of the observed protons in the universe. This is either a coincidence, or, as the universe expands, new matter is generated, and the speed of light decreases.
Could the meta stable Vacuum Energy explosion explain the origin of the Big Bang in the cyclical model?
I appreciate math but I feel like it can only scratch the surface of explaining the complexity of different things with-in nature.
It's almost like the Russians are sanding the gears with the help of complicit Germans. Nah. Couldn't possibly be that.
This seems disingenuous and needlessly salty. They're not doing it for the heck of it; isn't much of this work to pave the road towards the theory of everything, making one unified theory?
"How many of these did you already know?" Ummmm... One or two, I think...? "How many do you remember now?" (Much more confidently:) Oh, at least half as many! =:o]
I counter with quantum superposition. I find predeterminism equally boring for the reasons you describe. It is a theory that is heavily rooted in confirmation bias, since “everything that has happened, will have happened (and you can’t prove otherwise)”. As well as the bias that we, as humans, have figured out all the hidden variables of the universe and understand how they function with certainty (which we know is not true due to phenomena like quantum superposition).
All this coincidence is because we are applying numbers (a human invention) to natural phenomena. Accurate to 5 decimal places or 20 decimal places, means nowhere near equal.
If you divide pie, I will help you eat half, therefore demonstrating half pie is, well,,,,,,,half pie!
Well, let's face it. Forest fires and Wild fires did happen since day one so to speak. Anyway, way longer than we are around. They started from lightning and there was nobody around to put them out. Today, we unfortunately have idiots among us that need to have a fire for whatever reason and leave the place without putting the fire out properly. Then we have even bigger idiots that start a forest fire on purpose. Those people need to be dealt with to the maximum the law allows. But getting back to the first "problem". Trees do have a certain lifespan and if there is no fire, they can't reproduce and therefore we should not interfere. A fire that started sort of by itself will also go out by itself. Trying to cut down on CO2 is a big mistake. With not enough the trees die, the same way we do if we don't have enough oxigen.
Nope. Not too much. All good.
Thank goodness she changed her shirt.
Heat pumps for savings on the energybill is a good thought. But first put your money in insulate your house in this order: Roof/ceiling, floor, walls and lastly windows. This also affects the size (a smaller) heatpump, and thereby the investment in the heatpump.
My "Member ID" is ...6667, its not uncommon for member services to hang up on me.
The physicist who was going to answer all this was aborted in 1982. Her mother wanted to pursue a career as a dental hygienist.
You pronounced "laughed" exactly the way an American would.
Physics conspiracy theories...
Here maybe another coincidence, I was shooting my gun at 300 yards and found that 1 MOA (minute of angle) was 3.14 inches ( π ). So I checked it on a calculator and it was pie to 9 digits. The calculator rounds to 10 digits so I did it on excel to 100 digits and it was correct to 98 digits. 300 yd. = 10800 inch x sin 1/120° x 2 = the cord dimension of 1 MOA included angle.
😁💥
Size of the universe?? How is it measured, I wonder
if you do some math on numbers, you will find another number. Coincidence ?
Phasing out nuclear damaged the European economy in total. It affected all European countries in one way or another and the aftermath will stay for years. All the future social distress, economic issues, and even terr*rism will be the consequences.
Sabine's next step is to delve into Numerology 🤣🤣
So if we travel with the speed of light how we stop it and if we travel for 1 second with the speed of light the universe it will be over or we will have fallen into a star.so the key is travel with 99 or 98 speed of light
It is a coincidence that I was talking about coincidences. Or is it? In case you've forgotten, God loves you. Jesus loves you. On your journey beware of traps and snares. Do unto others as you would have them do unto you. Don't become lost in the ways of the world.
Here is another strange fact: the ratio of any two numbers is almost a factor of pi. For instance 1/2=pi*0.1591549430919 Coincidence? I think not.
I was in a higher math class and asked if any one had heard of gazenta math. No one had. 2 gazenta 4, 4 gazenta 8, and so on. Invented by Jethro.
we have this model of gravity that has a variable that defines a change in rate of acceleration and then we have another model of gravity that has a variable that defines a change in rate of acceleration, but for the expansion of space and the first variable, derived purely from data, happens to approximate square root of a fraction of the second variable, one which is also derived purely from data what are the odds that the cosmological constant interacts with the universe in a way where it affects gravity enough to produce significant effects over the scale of a galaxy and if there were to be this sort of connection, would it not be easier to explain in a quantum theory of gravity? We know that multiple bodies can cause a chaotic system to arise from gravity, so if there were entropy in gravity and the amount of entropy was attenuated by the expansion of the universe, further away objects orbiting faster could be an entirely expected result. Have I used enough what ifs and overspecified consequences enough that particle physicists would be interested yet?
Yes, they are all coincidences, it's in the title.
The Boreal forests have existed for more than 8000 years since the ice sheets receded. Yet the average age of trees is only 80 to 160 years. They have obviously burnt down before, in fact “mean time between forest fires” is a standard topic for those who study silviculture.
π = 3.14, 3.14 backwards spells PIE. Coincidence?
Speed of light is 299,792,458 meters/second. The exact latitude of the Great Pyramid of Giza is 29.9792458°N. Coincidence?
I think it was Dirac who postulated that the age and metrics of our universe were physically connected to quantum physics measures, and not just coincidence? (The implication is that some of our assumed constants are actually variables slowly changing across eons.
The temperature here and the latitude are same to 5 decimal places. Coincidence?
The explanation is simple if you happen to be an IT guy. You see in IT you often have to define random constants for your program, but then just writing something as boring as 65536 (0xFFFF in hexadecimal) is just... boring! So why not just write 0xBEEF instead? So when whatever humorous being created the universe and had to decide on a maximum size, they just jiggled some numbers around and used that instead.