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This video is about why it's harder to successfully land spacecraft and landers and rovers on Mars than on Earth, or Venus, or the Moon, or Titan, or asteroids. It all comes down to atmospheric density! When there's no atmosphere, you can do a powered descent in a flimsy tinfoil spacecraft like the Lunar Module, and when there's plenty of atmosphere you can do an unpowered descent via heat shield and parachutes like the space shuttle, Apollo command module, Soyuz, Huygens, etc. But on Mars with its thin air, you have to do both powered & unpowered descent, getting the worst of both worlds.
Thanks to Hoppy Price from JPL for fact-checking this video!
Link to Patreon Supporters: http://www.minutephysics.com/supporters/
REFERENCES
Spreadsheet to calculate landing success rates: https://docs.google.com/spreadsheets/d/1jqeZCG56UBKvd\_wsyW3GD-qd9TAsaW1RPAiZ-1BCUaE/edit?usp=sharing
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https://www.youtube.com/watch?v=h2nqgKL2JQU
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This video is about cutting, taping, and rearranging the periodic table into the Left Step form, the Mendeleev's flower form, the cake form, the wide form, the standard form, and so on. A great holiday craft!!
REFERENCES
Alternate Periodic Tables
https://en.wikipedia.org/wiki/Alternative_periodic_tables
Electronegativity
https://en.wikipedia.org/wiki/Electronegativity
Atomic Radius Radii
https://en.wikipedia.org/wiki/Atomic_radius
First Ionization energy
https://en.wikipedia.org/wiki/Ionization_energy
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
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https://www.youtube.com/watch?v=2WLYukAH-eY
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This video is about how to create muons in a particle accelerator via bombardment of heavy nuclei with protons, which results in creation of charged pions (plus and minus). The pions then decay into muons and mu neutrinos, and the muons then decay into electrons or positrons and more neutrinos. Muons also form in the upper atmosphere due to cosmic rays, and the uses of muons includes experimental tests of time dilation in special relativity, catalyzing muonic cold nuclear fusion, and more.
Muons on wikipedia: https://en.wikipedia.org/wiki/Muon
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
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MinutePhysics is on twitter - @minutephysics
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https://www.youtube.com/watch?v=zBr9YiSwdzM
Thanks to http://www.squarespace.com/minutephysics for sponsoring this video; you can use offer code MINUTEPHYSICS at checkout for 10% off your first purchase.
Link to Patreon Supporters: http://www.minutephysics.com/supporters/
This video is about what would happen if we built a giant ring around earth – what would happen to the ring, that is. Would if fall? Collapse? Start spinning?
REFERENCES:
Why Isn’t It Faster to Fly West? Video https://www.youtube.com/watch?v=3gNkgj9h2oM
Physics Girl Quarter Shrinking: https://www.youtube.com/watch?v=d2TDXKfBaMQ
Symmetry Breaking: https://en.wikipedia.org/wiki/Symmetry_breaking
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https://www.youtube.com/watch?v=4xSPlQUejd8
GO HERE NOW: https://www.einsteinathome.org
Einstein@Home wikipedia page: https://en.m.wikipedia.org/wiki/Einstein@Home
This video is about gravitational waves in the weak field limit as discovered by the LIGO collaboration, explained by parallels to electromagnetic radiation, sound waves, water waves, etc. I want to see Cat LIGO ASAP!
Thanks to everyone who supports MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon supporters here: http://www.minutephysics.com/supporters.html
Music by Nathaniel Schroeder, http://www.soundcloud.com/drschroeder
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https://www.youtube.com/watch?v=YHS9g72npqA
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This video is about Tuned Mass Dampers, which can be used to reduce or avoid unwanted vibrations, swaying, swinging, bending, etc on engineered structures ranging from buildings, skyscrapers, electricity power transmission lines, airplane engines, formula one race cars, etc. TMD's use damped coupled oscillators.
REFERENCES
Taipei Tower TMD Photo licensed from: Louie Psihoyos http://www.psihoyos.com
Coupled oscillators: http://www.reed.edu/physics/faculty/wheeler/documents/Sophmore%20Class%20Notes%202007/Chapter%204.pdf
Related things: https://en.wikipedia.org/wiki/Stockbridge_damper
Applications: https://en.wikipedia.org/wiki/Tuned_mass_damper#Mass_dampers_in_automobiles
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https://www.youtube.com/watch?v=ft3vTaYbkdE
Watch the original video in Spanish here: https://www.youtube.com/watch?v=J2Vkv5GQXww
This video is about how the physics and chemistry of sugar (in particular, how it melts, and how it caramelizes) is more complicated than you might think. It involves fructose, sucrose, glucose, and a sticky mess.
Credits:
Gallium melting footage by WorkshopScience
https://www.youtube.com/watch?v=jow4idr6HNs
Chill Day by LAKEY INSPIRED
https://soundcloud.com/lakeyinspired
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https://www.youtube.com/watch?v=RZvdpRUHImI
Thanks to YouTube RED’s new original series, LIFELINE, for sponsoring this video. Watch the first episode for free: https://www.youtube.com/watch?v=Ru4zkxNuJ_I
And thanks to my friends Sam and Niko (and all the rest) at the Corridor Digital channel for making awesome videos.
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For ages I’ve been thinking about doing a video analyzing time travel in fiction and doing a comparison of different fictional time travels – some do use wormholes, some relativistic/faster than light travel with time dilation, some closed timelike curves, some have essentially “magic” or no consistent rules that make any sense, or TARDIS's, or whatever. This video is an explanation of how time travel functions in different popular movies, books, & shows – not how it works “under the hood", but how it causally affects the perspective of characters’ timelines (who has free will? can you change things by going back to the past or forwards into the future?). In particular, I explain Ender's Game, Planet of the Apes, Harry Potter and the Prisoner of Azkaban, Primer, Bill & Ted’s Excellent Adventure, Back to the Future, Groundhog Day, Looper, the video game “Braid”, and Lifeline.
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https://www.youtube.com/watch?v=d3zTfXvYZ9s
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I was sent a magnetic guitar pick to review, so I reviewed it. Does it work? How? Why? What's the physics of electric guitar strings and pickups? Are magnets useful? Do they affect the strings? The pickups?
Thanks to Pete B. for loaning me the guitar.
Here are links to the youtube channel for the people who make the magnetic pick: https://www.youtube.com/@xpick
And the videos critiquing it
Samurai Guitarist: https://www.youtube.com/watch?v=zXTHRh1bQsg
Forlorn Hope: https://www.youtube.com/watch?v=2E8rrt5gE8Q
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/
MinutePhysics is on twitter - @minutephysics
And facebook - http://facebook.com/minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
...
https://www.youtube.com/watch?v=x9MF60ZO8rI