What optical effects appear when we accelerate? Could we reach the speed of light? And what would we see when we try to go faster? All these answers in 15 minutes!

0:00 - Introduction
1:01 - Take-off
2:25 - Aberration of light
4:41 - Doppler effect
6:50 - Time dilation
7:48 - Length contraction
10:28 - Speed of light
12:24 - Warp drive

This video is narrated by Octave Masson.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !

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To learn more :
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https://en.wikipedia.org/wiki/Terrell_rotation

These 27 facts will blow your mind!Credits: https://www.buzzfeed.com/bfmp/videos/63948Check out more awesome videos at BuzzFeedVideo!https://bit.ly/YTbuzzfeedvideoGET MORE BUZZFEED:https://www.buzzfeed.comhttps:....//www.buzzfeed.com/v flagship channel. Sometimes funny, sometimes serious, always shareable. New videos posted daily!To see behind-the-scenes & more, follow us on Instagram @buzzfeedvideo http://bit.ly/2JRRkKULove BuzzFeed? Get the merch! BUY NOW: https://goo.gl/gQKF8m

We all are, at times, the victims of one of the cruellest and most remorseless of all mental afflictions: obsessive thinking. But why?

FURTHER READING

You can read more on this and other subjects here: https://9qq0.short.gy/m0b8dK

“For some of us, today like every day, will mean another case of immersing ourselves, from the moment we wake up, in a by-now very familiar set of painful thoughts. We will dwell – once again – on how awful we look and more particularly, on how our nose is repulsively proportioned relative to the rest of our face. We will think – once again – of a website we inadvertently visited twelve years ago and how the police might be preparing to close in on, and arrest, us. We will think – once again – of how several of our neighbours (especially the people upstairs) might be colluding to ruin and disgrace us. Or we will think – once again – of something we said to a colleague which we fear they misconstrued and which may well lead them to seek disciplinary action against us at any moment…”

MORE SCHOOL OF LIFE

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CREDITS

Produced in collaboration with:

Natalia Biegaj
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Title animation produced in collaboration with

Graeme Probert
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MIT Introduction to Deep Learning 6.S191: Lecture 1
Foundations of Deep Learning
Lecturer: Alexander Amini
2023 Edition

For all lectures, slides, and lab materials: http://introtodeeplearning.com/

Lecture Outline
0:00​ - Introduction
8:14 ​ - Course information
11:33​ - Why deep learning?
14:48​ - The perceptron
20:06​ - Perceptron example
23:14​ - From perceptrons to neural networks
29:34​ - Applying neural networks
32:29​ - Loss functions
35:12​ - Training and gradient descent
40:25​ - Backpropagation
44:05​ - Setting the learning rate
48:09​ - Batched gradient descent
51:25​ - Regularization: dropout and early stopping
57:16​ - Summary

Subscribe to stay up to date with new deep learning lectures at MIT, or follow us on @MITDeepLearning on Twitter and Instagram to stay fully-connected!!

Michio Kaku: The Universe in a Nutshell
Watch the newest video from Big Think: https://bigth.ink/NewVideo
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OVERVIEW:

In a profoundly informative and deeply optimistic discussion, Professor Michio Kaku delivers a glimpse of where science will take us in the next hundred years, as warp drives, teleportation, inter-dimensional wormholes, and even time travel converge with our scientific understanding of physical reality. While firing up our imaginations about the future, he also presents a succinct history of physics to the present.
----------------------------------------------------------------------------------
MICHIO KAKU:

Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study as well as New York University (NYU).
----------------------------------------------------------------------------------
TRANSCRIPT:

My name is Professor Michio Kaku. I’m a professor of theoretical physics at the City University of New York and I specialize in something called string theory. I’m a physicist.
Some people ask me the question, “What has physics done for me lately? I mean, do I get better color television, do I get better internet reception with physics?” And the answer is yes. You see, physics is at the very foundation of matter and energy. We physicists invented the laser beam, we invented the transistor. We helped to create the first computer. We helped to construct the internet. We wrote the World Wide Web. In addition, we also helped to invent television, radio, radar, microwaves, not to mention MRI scans, PET scans, x-rays. In other words, almost everything you see in your living room, almost everything you see in a modern hospital, at some point or other, can be traced to a physicist.

Now, I got interested in physics when I was a child. When I was a child of eight, something happened to me that changed my life and I wanted to be part of this grand search for a theory of everything. When I was eight, a great scientist had just died. I still remember my elementary school teacher coming into the...

To read the full transcript and for more info, please visit https://bigthink.com/videos/un....iverse-in-a-nutshell
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Other Frequent contributors include Michio Kaku & Neil DeGrasse Tyson.

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Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in.

References: https://sites.google.com/view/....cosmic-distance-refe

0:00 How far away are things?
1:05 Near, far, parallax that star
3:25 Island universes and Hubble's blinking star
5:51 Redshifted rainbows and the expanding universe
7:41 Supernovae and the end of everything
9:08 Conclusion: The ladder of discovery
10:00 I'm hosting a game show!



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A visual and musical journey to the edge of our universe, visualizing the fabric of space-time in order to study its dynamics and different forms...

0:00 - Galaxies
2:05 - Big Bang
3:20 - The Earth
6:35 - Black hole
9:10 - Rotating black hole
10:37 - Gravitational waves

You can listen to the soundtrack on SoundCloud :
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This video is narrated by Octave Masson.
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Bill Gross has founded a lot of start-ups, and incubated many others — and he got curious about why some succeeded and others failed. So he gathered data from hundreds of companies, his own and other people's, and ranked each company on five key factors. He found one factor that stands out from the others — and surprised even him.

TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.
Find closed captions and translated subtitles in many languages at http://www.ted.com/talks/bill_....gross_the_single_big

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Hello everyone, Lesics is fightig for survival. If you can support us at Patreon, I would truly appreciate that - https://www.patreon.com/Lesics
You will get access to our exclusive videos as well. I hope you enjoyed the Golde gate bridge construction video.
Cheers Sabin

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This budgeting method I talk about in today's video really changed the way I view my own finances. It's called the P&L Method, or running your life like you would a business. Every month, I have my own personal P&L sheet, and I've also created one for you guys so you can budget on your own today too.

The P&L Method Template: https://beacons.ai/humphreytalks/freedownloads

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Timestamps:
0:00 - Start Here
0:36 - Step 1: Being Aware
1:42 - Tracking Expenses Challenge
3:24 - Embarrassment & Finances
4:55 - 4 Things To Get Better
6:17 - THE BUDGETING METHOD
8:51 - Zero-Based Alternative
9:54 - How to Allocate Money
13:07 - Where People Get Stuck

PS: I am not a current Financial Advisor, any investment commentary are my opinions only. Some of the links in this description are affiliate links that I do receive a commission for & they help support the channel!

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On April 8, 2024, the Moon’s shadow fell upon the Earth, creating a total solar eclipse across North America. If you had the chance to see it, you're surely glad you didn't miss it. It’s an amazing coincidence that total eclipses happen at all — and that we’re alive at a time when we can see and predict them. We made this video so you can learn how to watch an eclipse safely, what to look for during an eclipse, why eclipses happen, and how eclipses have helped advance scientific research.

Explore this April 8, 2024 eclipse map from NASA! https://science.nasa.gov/eclip....ses/future-eclipses/

Find your next solar eclipse here: https://eclipse.gsfc.nasa.gov/SEatlas/SEatlas.html

Learn more about the solar eclipse timer app: https://www.solareclipsetimer.com/

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View full lesson: http://ed.ted.com/lessons/how-....sugar-affects-the-br

When you eat something loaded with sugar, your taste buds, your gut and your brain all take notice. This activation of your reward system is not unlike how bodies process addictive substances such as alcohol or nicotine -- an overload of sugar spikes dopamine levels and leaves you craving more. Nicole Avena explains why sweets and treats should be enjoyed in moderation.

Lesson by Nicole Avena, animation by STK Films.

Dive into the subconscious to see what’s really driving the decisions you make.
Official Website: https://to.pbs.org/3pUGv1s | #novapbs are you in control, or is your brain controlling you? Dive into the latest research on the subconscious with neuroscientist Heather Berlin. Sleepwalking, anesthesia, game theory, and more reveal surprising insights in this eye-opening journey to discover what’s really driving the decisions you make.

Chapters:
00:00 Introduction
03:22 Sleepwalking and the Brain
08:36 Anesthesia and the Brain
14:18 Results of Split Brain Surgery
22:23 Emotions and the Brain
30:01 How Does Trauma Affect the Brain?
35:39 How Much Control Do We Have of Our Brain?
45:44 Creativity and the Brain
50:17 Conclusion

© 2023 WGBH Educational Foundation

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#brainscience #perception #neuroscience #consciousness #subconscious #subconsciousmind

The Real Reason We Drink Cow’s Milk
Click my CoPilot link https://go.mycopilot.com/johnnyharris to get a FREE TRIAL with your own expert fitness and health coach.

Ever wonder why your mom made you drink so much milk as a kid? Turns out the answer is a lie.

Btw we recently experimented with a new map only format to tell the story of the US government meddling in other countries. Check it out and let me know if you like it and we’ll do more! https://youtu.be/_wIOqHSsV9c

Next week’s video is already live. It’s about why unemployment is a much bigger deal than we realize. Go watch now on Nebula (a portion of your subscription goes directly to support our channel): https://nebula.tv/videos/johnn....yharris-unemployment

Check out all my sources for this video here: https://docs.google.com/docume....nt/d/1UbxQ_gXyq4jQRm

Get access to behind-the-scenes vlogs, my scripts, and extended interviews over at https://www.patreon.com/johnnyharris

Custom Presets & LUTs [what we use]: https://store.dftba.com/produc....ts/johnny-iz-luts-an

Thank you to Michael Moss for lending his expertise. You can read his book “Hooked” here - https://www.mossbooks.us/#HOOOKEDOutSoon

A big thank you to Melanie Dupuis for speaking to us for this video. She has a fantastic book that we cited throughout this piece. Read “Nature’s Perfect Food: How Milk Became America’s Drink” here - https://books.google.ch/books?id=V_CuITfG-FgC&pg=PA47&dq=how+we+started+drinking+milk&lr=&hl=de&source=gbs_toc_r&cad=2#v=onepage&q&f=false

Thank you to Ariana Gerstein and her film “Milk in the Land.” Check out her website to see more of her work - https://www.arianagerstein.com/

About:
Johnny Harris is an Emmy-winning independent journalist and contributor to the New York Times. Based in Washington, DC, Harris reports on interesting trends and stories domestically and around the globe, publishing to his audience of over 3.5 million on Youtube. Harris produced and hosted the twice Emmy-nominated series Borders for Vox Media. His visual style blends motion graphics with cinematic videography to create content that explains complex issues in relatable ways.

- press -
NYTimes: https://www.nytimes.com/2021/1....1/09/opinion/democra
NYTimes: https://www.nytimes.com/video/....opinion/100000007358
Vox Borders: https://www.youtube.com/watch?v=hLrFyjGZ9NU
NPR Planet Money: https://www.npr.org/transcripts/1072164745


- where to find me -
Instagram: https://www.instagram.com/johnny.harris/
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One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

Subscribe and turn on notifications 🔔 so you don't miss any videos: http://goo.gl/0bsAjO

There's a long-held myth that cracking your knuckles can damage your hands. The sound definitely might make people around you cringe, but what's making those noises, and is it actually bad for you?

There's a space in your joints filled with synovial fluid, a liquid that reduces the friction in your joints when you move. It contains gases (oxygen, nitrogen, and carbon dioxide).

When you pop a joint, you stretch out that space between the bones. That expanding space creates negative pressure, like a vacuum, that sucks in the synovial fluid. It forms bubbles, which then collapse, and that's what you hear.

Most medical sources agree that unless you experience pain when you pop your joints, you're probably fine to keep doing it. Researchers (including one man who cracked his knuckles on just one hand for 60 years) haven't established a connection between cracking your knuckles and arthritis.

One 1990 study of 300 people did find that cracking knuckles over a long period of time led to hand swelling and decreased grip strength, but there hasn't been any follow-up research on that.

Read it here: https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC10040

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Basically a full day AI course crammed into 18 mins of drawing & talking. Target audience: Everyone.

Covers questions like What is generative AI, how does it work, how do I use it, what are some of the risks & limitations. Also covers things like autonomous agents, the role of us humans, prompt engineering tips, AI-powered product development, origin of ChatGPT, different types of models, and some tips about mindset around this whole thing.

Here is the full drawing:
https://blog.crisp.se/wp-conte....nt/uploads/2024/01/g

Voice translations:
- German: https://www.youtube.com/watch?v=Dgu5utapmk0
- Ukrainian: https://www.youtube.com/watch?v=rUqIzty9hkM

Would you like to make a voice translation? ElevenLabs can do really voice translation which even sounds like me :)
You can also do a manual dub with your own voice if you prefer. Whatever works best.
1. Check out https://elevenlabs.io/docs/dubbing/studio
2. Make the video & upload it to youtube or somewhere.
3. Make sure the description shows that this is an AI translation, and include a link to the original video.
4. Send a link to me (for example via a comment) and I'll add it above.

If you have practical questions you can ask Stefan Kirschnick, he made the German dub. https://www.linkedin.com/in/stefankirschnick/

Branding isn’t buzz — we’ve been doing it for thousands of years.

Subscribe to Big Think on YouTube ► https://www.youtube.com/c/bigthink
Up Next ► How Apple and Nike have branded your brain https://youtu.be/4eIDBV4Mpek

Design and branding are inherently a part of human nature. They serve as a way of signaling to others, non-verbally, who we are, what we believe in, and what is important to us.

There was a time when consumers were exclusively interested in a company's products — upgrades, different flavors, different colors.

But today, consumers want to know if the companies that they are buying from are worthy of their money. Do the companies practice good ethics? Do they have certain values? That's something that we have really never seen before.

To learn even more from the world's biggest thinkers, get Big Think+ for your business: https://bigthink.com/plus/

Read the video transcript ► https://bigthink.com/videos/the-power-of-branding/

----------------------------------------------------------------------------------

About Debbie Millman:
Named “one of the most creative people in business” by Fast Company, and “one of the most influential designers working today” by Graphic Design USA, Debbie Millman is also an author, educator, curator and host of the podcast Design Matters. Debbie’s podcast, Design Matters is one of the first and longest running podcasts, and as host and founder, Millman has interviewed nearly 500 of the most creative people in the world over the past 17 years. Design Matters won a 2011 Cooper Hewitt National Design Award, in 2015 Apple designated it one of the best overall podcasts on iTunes, and in 2021 designated it one of their “All Time Favorite Podcasts.” In addition, the show has been nominated for six Webby Awards, and has been listed on over 100 “Best Podcasts” lists, including one of the best podcasts in the world by Business Insider and Vanity Fair.

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Read more of our stories on branding:
The neuroscience of branding
►https://bigthink.com/neuropsyc....h/how-apple-and-nike
Reinvention 101: How to build your personal brand
► https://bigthink.com/plus/reinvention-101-how-to-build-your-personal-brand/
How brand evangelists can provide the ultimate word-of-mouth advertising
►https://bigthink.com/plus/win-the-ultimate-word-of-mouth-advertising-from-brand-evangelists/

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In the 1600s, the Dutch East India Company employed hundreds of ships to trade goods around the globe. In order to fund their voyages, the company turned to private citizens to invest money to support trips in exchange for a share of the profits. In doing so, they unknowingly invented the world’s first stock market. So how do companies and investors use the market today? Oliver Elfenbaum explains.

Lesson by Oliver Elfenbaum, directed by Tom Gran & Madeleine Grossi.

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It would be a lot easier to study the science of dreaming if we weren’t asleep every time we did it. Why do we dream? What does dreaming do for our brains? How did dreaming evolve? Here’s a look at the current theories from psychology and neuroscience.

References:
Barrett, D. (2017), Dreams and creative problem-solving. Ann. N.Y. Acad. Sci., 1406: 64-67. https://doi.org/10.1111/nyas.13412
Carlo Cipolli, Roberto Bolzani, Cesare Comoldi, Rossana De Beni, Iino Fagioli, Bizarreness Effect in Dream Recall, Sleep, Volume 16, Issue 2, March 1993, Pages 163–170, https://doi.org/10.1093/sleep/16.2.163
Eagleman DM, Vaughn DA (2021). The Defensive Activation Theory: REM Sleep as a Mechanism to Prevent Takeover of the Visual Cortex. Frontiers in Neuroscience. 15:632853. doi: 10.3389/fnins.2021.632853
El-Solh, A. A. (2018). Management of nightmares in patients with posttraumatic stress disorder: Current perspectives. Nature and Science of Sleep, 10, 409–420.https://pubmed.ncbi.nlm.nih.gov/30538593/
Hughes, J. Donald. (2000). Dream Interpretation in Ancient Civilizations. Dreaming. 10. 7-18. 10.1023/A:1009447606158.
Káli, S., Dayan, P. Off-line replay maintains declarative memories in a model of hippocampal-neocortical interactions. Nature Neuroscience 7, 286–294 (2004). https://doi.org/10.1038/nn1202
Montangero, Jacques & Ivanyi, Corinne & Saint-Hilaire, Zara. (2003). Completeness and accuracy of morning reports after a recall cue: Comparison of dream and film reports. Consciousness and cognition. 12. 49-62. 10.1016/S1053-8100(02)00029-6.
Stickgold, R., Malia, A.; Maguire, D., Roddenberry, D., O'Connor, M. (2000). Replaying the Game: Hypnagogic Images in Normals and Amnesics. Science. 290 (5490): 350–353. doi:10.1126/science.290.5490.350.
Valli, K., Revonsuo, A., Pälkäs, O., Ismail, K. H., Ali, K. J., & Punamäki, R.-L. (2005). The threat simulation theory of the evolutionary function of dreaming: Evidence from dreams of traumatized children. Consciousness and Cognition, 14(1), 188–218. https://pubmed.ncbi.nlm.nih.gov/15766897/
van der Linden, S. The Science Behind Dreaming. Scientific American. July 26, 2011
Erin J. Wamsley, PhD, Karen Perry, MD, Ina Djonlagic, MD, Laura Babkes Reaven, MD, Robert Stickgold, PhD, Cognitive Replay of Visuomotor Learning at Sleep Onset: Temporal Dynamics and Relationship to Task Performance, Sleep, Volume 33, Issue 1, January 2010, Pages 59–68, https://doi.org/10.1093/sleep/33.1.59
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