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Category: physics – Page 178

Are warp drives science now?

Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription.

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Today we’ll talk about one of my favorite topics, warp drives. I am fascinated by warp drives because they are future technology straight out of science fiction and yet they are not for any obvious reason impossible. After all, Einstein taught us that space can indeed deform and that distances can indeed shrink and that time can indeed dilate. So why not bend and deform space-time to get us faster from one place to another?

Well, the devil is in the details. While warp drives have been studied in Einstein’s theory of general relativity, they require unphysical stuff: negative energies, repulsive gravity, or things that move faster than light already. In this video, I summarize what new scientific literature has been published on this in the past year, and what progress has been made.

The new paper from Erik Lentz is here: https://iopscience.iop.org/article/10.1088/1361-6382/abe692

The press release is here: https://www.uni-goettingen.de/en/3240.html?id=6192

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These Experiments Could Prove Einstein Wrong

Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription.

Einstein’s theory of general relativity has made countless correct predictions and yet physicists are constantly trying to prove it wrong. Why? What would it be good for to prove Einstein wrong? And how could it be done? In this video I go through the most promising experiments that physicists currently work on which could prove Einstein wrong.

You can support me on Patreon: https://www.patreon.com/Sabine.

The new constraints from gamma ray bursts:
https://arxiv.org/abs/2109.

The new Afshordi paper on black hole echoes.
https://arxiv.org/abs/2201.

Aspelmeyer et al’s quest for massive superpositions.

Continue reading “These Experiments Could Prove Einstein Wrong” | >

Time: Do the past, present, and future exist all at once?

Everything we do as living organisms is dependent, in some capacity, on time. The concept is so complex that scientists still argue whether it exists or if it is an illusion.

In this video, astrophysicist Michelle Thaller, science educator Bill Nye, author James Gleick, and neuroscientist Dean Buonomano discuss how the human brain perceives of the passage of time, the idea in theoretical physics of time as a fourth dimension, and the theory that space and time are interwoven.

Thaller illustrates Einstein’s theory of relativity, Buonomano outlines eternalism, and all the experts touch on issues of perception, definition, and experience.

Clarifying the physics of walking: For multi-legged creatures, it’s a lot like slithering

The physics of walking for multi-legged animals and robots is simpler than previously thought. That is the finding described by a team of roboticists, physicists and biologists in the Sept. 5 issue of the Proceedings of the National Academy of Sciences, in a paper titled “Walking is like slithering: a unifying, data-driven view of locomotion.”

“This is important because it will allow roboticists to build much simpler models to describe the way robots walk and move through the world,” said paper coauthor Nick Gravish, a faculty member in the Department of Mechanical and Aerospace Engineering at the University of California San Diego.

The researchers had previously studied ant walking and wanted to see how their findings could be applied to robots. In the process, they discovered a new mathematical relationship between walking, skipping, slithering and swimming in viscous fluids for multi-legged animals and bots.

The World in 2200: Top 10 Future Technologies

This video covers the world in 2,200 and its future technologies. Watch this next video about the world in 2300: https://bit.ly/3CMVJYY.
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SOURCES:
• https://www.futuretimeline.net.
• The Future of Humanity (Michio Kaku): https://amzn.to/3Gz8ffA
• The Singularity Is Near: When Humans Transcend Biology (Ray Kurzweil): https://amzn.to/3ftOhXI
• Physics of the Future (Michio Kaku): https://amzn.to/33NP7f7
• https://www.realclearscience.com/blog/2020/10/29/3_ways_to_m…ethod.html.

Patreon Page: https://www.patreon.com/futurebusinesstech.
Official Discord Server: https://discord.gg/R8cYEWpCzK

💡 On this channel, I explain the following concepts:
• Future and emerging technologies.
• Future and emerging trends related to technology.
• The connection between Science Fiction concepts and reality.

SUBSCRIBE: https://bit.ly/3geLDGO

Disclaimer:

Continue reading “The World in 2200: Top 10 Future Technologies” | >

The World in a Million Years: Top 7 Future Technologies

This video covers the world in a million years and its future technologies. Watch this next video about the world in 10,000 A.D.: bit.ly/373KvDr.
► Support This Channel: https://www.patreon.com/futurebusinesstech.
► Udacity: Up To 75% Off All Courses (Biggest Discount Ever): https://bit.ly/3j9pIRZ
► Brilliant: Learn Science And Math Interactively (20% Off): https://bit.ly/3HAznLL
► Jasper AI: Write 5x Faster With Artificial Intelligence: https://bit.ly/3MIPSYp.

SOURCES:
• https://www.futuretimeline.net.
• The Future of Humanity (Michio Kaku): https://amzn.to/3Gz8ffA
• The Singularity Is Near: When Humans Transcend Biology (Ray Kurzweil): https://amzn.to/3ftOhXI
• Physics of the Future (Michio Kaku): https://amzn.to/33NP7f7

Patreon Page: https://www.patreon.com/futurebusinesstech.
Official Discord Server: https://discord.gg/R8cYEWpCzK

💡 On this channel, I explain the following concepts:
• Future and emerging technologies.
• Future and emerging trends related to technology.
• The connection between Science Fiction concepts and reality.

SUBSCRIBE: https://bit.ly/3geLDGO

Disclaimer:

Continue reading “The World in a Million Years: Top 7 Future Technologies” | >

The World in 10,000 A.D.: Top 7 Future Technologies

This video covers the world in 10,000 A.D. and its future technologies. Watch this next video about the world in a million years: https://bit.ly/3xe50by.
► Support This Channel: https://www.patreon.com/futurebusinesstech.
► Udacity: Up To 75% Off All Courses (Biggest Discount Ever): https://bit.ly/3j9pIRZ
► Brilliant: Learn Science And Math Interactively (20% Off): https://bit.ly/3HAznLL
► Jasper AI: Write 5x Faster With Artificial Intelligence: https://bit.ly/3MIPSYp.

SOURCES:
• https://www.futuretimeline.net.
• The Future of Humanity (Michio Kaku): https://amzn.to/3Gz8ffA
• The Singularity Is Near: When Humans Transcend Biology (Ray Kurzweil): https://amzn.to/3ftOhXI
• Physics of the Future (Michio Kaku): https://amzn.to/33NP7f7

Patreon Page: https://www.patreon.com/futurebusinesstech.
Official Discord Server: https://discord.gg/R8cYEWpCzK

💡 On this channel, I explain the following concepts:
• Future and emerging technologies.
• Future and emerging trends related to technology.
• The connection between Science Fiction concepts and reality.

SUBSCRIBE: https://bit.ly/3geLDGO

Disclaimer:

Continue reading “The World in 10,000 A.D.: Top 7 Future Technologies” | >

Was the universe made for us?

Check out the physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription.

In this video I explain how the argument that the universe is finetuned for life works, why it’s wrong, how the mistake happens, and what that means for the existence of god and the multiverse.

If you like our videos, please consider supporting us on Patreon:
https://www.patreon.com/Sabine.

Some references for constants of nature that are nothing like our own yet give rise to complex chemistry.

Roni Harnik, Graham D. Kribs, and Gilad Perez.
A universe without weak interactions.
Phys. Rev. D 74, 035006 (2006)
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.74.035006
http://arxiv.org/abs/hep-ph/0604027

Fred C. Adams, Evan Grohs.

Continue reading “Was the universe made for us?” | >

Does the Past Still Exist?

To try out our new course (and many others on math and science), go to https://brilliant.org/sabine. You can get started for free, and the first 200 will get 20% off the annual premium subscription.

Albert Einstein taught us that space and time belong together to a common entity: space-time. This means that time becomes a dimension, similar to space, and has profound consequences for the nature of time. Most importantly it leads to what has been called the block universe, a universe in which all moments of time exist the same way together. The future, the present, and the past are the same, it is just our perception that suggests otherwise.

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0:00 Intro.
00:58 Space-time.
02:09 Space-time diagrams.
03:40 Special Relativity.
05:05 The Relativity of Simultaneity.
10:36 The Block Universe.
12:46 The if’s and but’s.
14:50 Sponsor Message