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AGelbert

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Re: Science
« Reply #105 on: March 26, 2019, 06:14:47 pm »
5 Gyroscope Experiments Amazing to Watch
325,318 views


Top Fives

Published on Dec 2, 2018

► Send us your video ideas! topfivescontact@gmail.com
A gyroscope is a device used to maintain orientation during angular velocity. It's pretty cool to watch, so today's video is on five amazing gyroscope videos.

Several segments are licensed under Creative Commons (CC)
Arvind Gupta (CC), Alan Kuehner (CC), rwg42985 (CC), ESA (CC), NASA (CC)

The Top Fives channel brings you informational and entertaining top five videos from around the world. Join us and subscribe for more.

Note: The videos featured on the Top Fives channel are for educational and informational purposes. If you have a good idea for a video, leave us a comment! We try to read each and every comment made.

Category Entertainment
« Last Edit: March 26, 2019, 08:25:17 pm by AGelbert »
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Re: Science
« Reply #106 on: March 28, 2019, 05:44:29 pm »
#SpaceX #Rockets #ArtOfEngineering

How SpaceX Lands Rockets with Astonishing Accuracy
524,567 views



Art of Engineering

Published on Jan 14, 2019

A look at how SpaceX achieves their astonishing landing accuracy with the Falcon 9 rocket.

Support Art of Engineering on Patreon: https://www.patreon.com/ArtOfEngineering

Twitter: https://twitter.com/aoEngineering
Facebook: https://www.facebook.com/ArtOfEnginee...

Video Attributions:
“ORBCOMM-2 Full Launch Webcast” by SpaceX
“Falcon Heavy Test Flight” by SpaceX
“Making Life Multiplanetary” by SpaceX
“SpaceX Interplanetary Transport System” by SpaceX
“CRS-12 Launch Webcast” by SpaceX
“CRS-8 First Stage Landing on Droneship” by SpaceX
“Grasshopper 325m Test Single Camera (Hexacopter)” by SpaceX
“How Not to Land an Orbital Rocket Booster” by SpaceX
“CRS-10 Falcon 9 First Stage Landing” by SpaceX
“Iridium-8 Mission” by SpaceX
“First-stage landing Onboard camera” by SpaceX
“SpaceX Rocket Tank Production Timelapse” by SpaceX
“Iridium-2 Launch Webcast” by SpaceX
“Koreasat-5A Webcast” by SpaceX
“CRS-11 Landing aerial footage” by SpaceX
“Elon's SpaceX Tour - Engines" by SpaceX

Still Image Attributions:
“Falcon rocket family 3” by Lucabon
“SpaceX ASDS in position prior to Falcon 9 Flight 17 carrying CRS-6” by SpaceX
“Rocket Stove - Poele Dragon v1.3 sortie verticale r002” by Alain Van den Hende

Music by Epidemic Sound

#SpaceX #Rockets #ArtOfEngineering

Category Science & Technology
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AGelbert

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Re: Science
« Reply #107 on: March 29, 2019, 02:39:52 pm »
inertial propulsion with gyroscope part 18 - mass transfer-
1,100 views


woopyjump

Published on May 12, 2018

ouufff !!.....it seems that Newton is always very right, but Eric Laithwaite too.

If this attempt of explanation of the movement of mass transfer, is correct, the next step will be to study the mechanism of how a spinning and precessing gyro is able to transfer its mass along the spinning shaft ?? And that will be epic for sure.

Laurent

CategoryNews & Politics
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Re: Science
« Reply #108 on: April 16, 2019, 02:21:17 pm »
 

APRIL 16TH, 2019 AT 7:22 PM BY TIBI PUIU

Mice 🐭 🐁 🐀 in Space!    


Associated article:

 
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AGelbert

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Re: Science
« Reply #109 on: April 29, 2019, 01:44:44 pm »
Extreme Magnets
330,988 views



Tech Ingredients
Published on Sep 4, 2018

We combine large, powerful magnets into a single structure to produce an extremely high magnetic field.

Category Science & Technology
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Re: Science
« Reply #110 on: April 29, 2019, 02:05:10 pm »
Unboxing a MONSTER  | Extreme neodymium magnets 👀
3,243,274 views




Brainiac75
Published on Sep 17, 2017

Never thought I would unbox a magnet bigger than my monster 6x2", but technology is evolving and I love following along.

Luckily, magnetportal.de was kind enough to donate the magnets featured in this video. They are not cheap! The biggest one alone contains around 3 kg of the rare earth metal neodymium.


The website is German, but I have communicated with them in English and Chrome can translate the website to your language, so don't let it stop you.  ;D

FULL MUSIC CREDITS
Time codes: 0:00 + 12:08
Dark Times by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100747

Time codes: 0:43 + 8:16
Relaxing Piano Music by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1500075

Time codes: 2:23 + 5:21
Echoes of Time v2 Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1300030

Time code: 3:56
Phantasm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100113

Time code: 7:00
Monkeys Spinning Monkeys by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1400011

Category Science & Technology
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Re: Science
« Reply #111 on: July 05, 2019, 06:45:35 pm »
Is the Speed of Sound Constant?

The speed of light is a constant, always traveling at the rate of 186,000 miles (300,000 km) per second. The speed of sound, on the other hand, is much more fickle. For example, sound waves move at 761.2 miles per hour (1,225 km/h) at sea level when the air temperature is 59 degrees F (15 degrees C).

However, heat up the air and they move faster; cool the air, and they slow down.

That's why breaking the sound barrier high in the sky is relatively easy: Temperatures are colder, so a lower speed will do the job.

Interestingly, sound moves very quickly under water, where the molecules are much denser than they are in the air. Their density means that they bump into one another more quickly, which is how sound travels. Sound travels through water at approximately 4,856 feet per second (1,480 meters/sec) -- more than four times faster than its speed through the 💨 air. But because the molecules are denser in water, sound needs more energy (ie. loudness) -- to get moving. That's why faint sounds can't be heard under water like they can above it.

Sounds interesting:

► Sound doesn't exist in space because there aren't any molecules for it to travel through.
► The greatest sound ever recorded 💥 was the eruption of the Krakatoa volcano in 1883. The explosion could be heard 3,000 miles (4,828 km) away.

► A whip's snap is the sound of the tip breaking the sound barrier.

https://www.wisegeek.com/is-the-speed-of-sound-constant.htm

Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Revolutionary Air Conditioner!
« Reply #112 on: July 18, 2019, 11:43:58 pm »
Revolutionary Air Conditioner!
1,198,738 views


Tech Ingredients

Published on Jul 3, 2019

I explain the design and principles behind desiccant based air conditioning. This extremely efficient, DIY air conditioner is inexpensive to build and costs less than one half as much to run as a conventional, compressor based air conditioner.

Previous related videos:

Find us on Patreon - https://www.patreon.com/techingredients

#Cool #Summer
Category Science & Technology
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AGelbert

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How Many Galaxies Are in the Universe?
« Reply #113 on: August 02, 2019, 06:46:38 pm »

How Many Galaxies Are in the Universe?

A galaxy contains billions of stars, held together by gravity. Within each galaxy, there are planetary systems, like the Earth and its neighbor planets within the Milky Way. But ours is just one galaxy in an astronomical sea of stars reaching farther than the most powerful telescopes can see. We will probably never know just how many galaxies exist, but 3-D modeling by the Hubble Space Telescope over 20 years has come up with a new estimate, published in The Astronomical Journal. In 2016, astronomers studied computer-enhanced deep space images and determined that there are probably around two trillion galaxies in the universe , far more than the previous estimate of between 100 and 200 billion galaxies.

Galaxies far, far away:

֍ The landmark Hubble Deep Field imaging of the mid-1990s gave scientists their first analysis of galaxies, and Hubble's Ultra Deep Field in 2004 added a plethora of faint galaxies, leading to an estimate of 200 billion galaxies.

֍ The newest analysis of deep-space images from Hubble converted the images into 3-D. Using mathematical models, scientists were able to infer the existence of galaxies that current telescopes cannot see.

֍ “It boggles the mind that over 90 percent of the galaxies in the universe have yet to be studied,” the University of Nottingham astronomers wrote. “Who knows what interesting properties we will find ... with the next generation of telescopes?”

https://www.wisegeek.com/how-many-galaxies-are-in-the-universe.htm

🕊Small Magellanic Cloud

Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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Re: Science
« Reply #114 on: August 18, 2019, 06:43:20 pm »
The Glass Age, Part 1: Flexible, Bendable Glass
6,330,062 views


Corning Incorporated
Published on Nov 19, 2014

Be amazed as Adam Savage and Jamie Hyneman introduce us to a whole new way of thinking about glass. Learn the history of glass innovation and watch incredible demonstrations of bendable optical fiber and thin, ultra-flexible glass.This is the Glass Age, where materials science is constantly pushing boundaries and creating new possibilities for glass-enabled technology and design. See how glass is shaping the future at www.TheGlassAge.com
Presented by Corning.

Category Science & Technology

The Glass Age, Part 2: Strong, Durable Glass
4,519,579 views


Corning Incorporated
Published on Nov 19, 2014
Ever crack your cell phone screen? How about your car windshield?  Adam Savage and Jamie Hyneman explain why those days may soon be behind us. Watch as they conduct mind-bending demonstrations of strong, durable glass. This is the Glass Age, where materials science is constantly pushing boundaries and creating new possibilities for glass-enabled technology and design. See how glass is shaping the future at www.TheGlassAge.com. Presented by Corning.

Category Science & Technology

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AGelbert

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Passing Jupiter
« Reply #115 on: August 22, 2019, 11:18:34 pm »
Perijove16: Passing Jupiter
« Last Edit: August 23, 2019, 04:26:50 pm by AGelbert »
Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life. Pr. 13:12

AGelbert

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🤖 Go ahead, make my day. 😉
« Reply #116 on: August 23, 2019, 04:23:17 pm »
Fri, 08/23/2019 - 14:12

🤖 Go ahead, make my day. 😉



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AGelbert

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Agelbert NOTE: Enjoy the real color photos of Mars, including water vapor clouds and even the atmosphere in this video. ✨👍

What did India’s Mars Orbiter Mission see over Mars? MOM Mangalyaan ISRO
517,998 views


Astrum
Published on Aug 24, 2019
The ISRO successfully sent the Mangalyaan probe to Mars on the first time of trying, but what has it done and seen since its been there?
https://brilliant.org/astrum/

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A big thank you to Brilliant for supporting this video. Sign up for free using the link above. That link will also get the first 200 subscribers 20% off a premium subscription to the website if you like what you see.
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Become a Patron today and support Astrum! Donate link above. I can't do it without you. Patreons can help pick the next Astrum Answers in a fortnightly poll. Thanks to those who have supported so far!


Image Credits: NASA/ISRO

Music Credits:
Stellardrone - Billions and Billions
Stellardrone - Cepheid
Category Education

Agelbert NOTE: Check out that tall thing on Mars moon Phobos . 🧐

They Discovered Something on Mars and Phobos that Cannot Be Explained ..11,924 views


The 5th Kind
Premiered 19 hours ago
The now dubbed “Phobos monolith” is a large object on the surface of Mars's moon “Phobos”. The giant structure stands 90 meters tall. Only 3 meters less than that of the Statue of Liberty Monument in New York. 

First discovered by “Efrain Palermo” who noticed the distinct shadow of the anomaly while analysing images taken from the “Mars Global Surveyor orbiter” lanched in November 1996. This peculiar and solitary large rock was also confirmed by “Lan Fleming”, an imaging sub-contractor at NASA Johnson Space Center. Also Noting the possibility that the monolith is artificial in nature.

Along with the mysterious Monolith photographed on the Martian moon “Phobos”.. A similar looking structure can also be seen upon the surface of Mars...

Featuring David Childress, Billy Carson, Mike Bara and Michael Salla.
Category People & Blogs

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AGelbert

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Environmental Rules Being Rolled Back in the US 😠
« Reply #118 on: September 16, 2019, 07:53:46 pm »
Environmental Rules Being Rolled Back in the US

58 views•Published on Sep 16, 2019


The Science Revolution
339 subscribers

In the Science Revolution, Thom Hartmann covers the Trump administration trying to save us from the tyranny of efficient lightbulbs, with environmental rules being rolled back.

Also, author, Tim Wise joins Thom to talk about big AG and its effects on climate change. In our GBU segment,  the  Good is Ireland and what they're doing to help the climate and there is a very very ugly killer in the Mohave Desert, not found yet - we'll be talking about.

Plus, our new Geeky Science segment is inspired by Thom's indoor cat, Kedi, getting loose outdoors, and what he did.

Click the time to jump to a segment:
0:37 Energy Light Bulbs
3:15 Is Big Agriculture Destroying the Planet?
13:03 The Good, the Bad and the Very, Very Ugly
14:57 Geeky Science
16:08 Science Fact of the Week

0:37 ENERGY LIGHT BULBS
The Trump administration in the US continues to roll back environmental protections, this time on energy-efficient light bulbs. Is this going to help destroy civilization for profits?

3:15 IS BIG AGRICULTURE DESTROYING THE PLANET?
With special guest Tim A. Wise

Is big agriculture the biggest obstacle to solving climate change? Chemical intensive agriculture is kicking our planet and actually contributing to world hunger.

The deforestation in Brazil is contributing to CO2.

Why is the US federal government promoting the industrializing of land and pushing the same in other countries? Small scale farmers around the world are being pushed to increase in size and use chemicals produced in the US. Seed companies want farmers to not save seeds for the next year but buy fresh seed every year. There is nothing climate-smart or sustainable about that.

Timothy A. Wise joined Thom to explain the policies and what is going wrong.

13:03 THE GOOD, THE BAD & THE VERY, VERY UGLY
The Good - Ireland Planting Trees
The Bad - Broadcast News
The Ugly - The Killer of 42 Wild Burros

14:47 GEEKY SCIENCE
To crows chase cats? They do at the Hartmann residence. And what of bird sounds and squirrels?

16:08 SCIENCE FACT OF THE WEEK
According to scientists at NOAA's National Centers for Environmental Information - July 2019 was the hottest month on record for the planet. The average global temperature in July was 1.71 degrees F above the 20th-century average, making it the hottest July in the 140-year record. The previous hottest month on record was July 2016. Nine of the 10 hottest Julys have occurred since 2005 -- with the last five years ranking as the five hottest. Not surprising - There is also record-low sea ice. Average Arctic sea ice set a record low for July, running 19.8% below average -- surpassing the previous historic low of July 2012.

#MoreScienceRevolution
Category Education
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AGelbert

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🕵️ The Bizarre Behavior of Rotating Bodies , Explained 🧐
3,535,089 views • Sep 19, 2019


Veritasium
6.47M subscribers
Spinning objects have strange instabilities known as The Dzhanibekov Effect or Tennis Racket Theorem - this video offers an intuitive explanation.
Part of this video was sponsored by LastPass, click here to find out more: https://ve42.co/LP

References:
Prof. Terry Tao's Math Overflow Explanation: https://ve42.co/Tao

The Twisting Tennis Racket
Ashbaugh, M.S., Chicone, C.C. & Cushman, R.H. J Dyn Diff Equat (1991) 3: 67. https://doi.org/10.1007/BF01049489

Janibekov’s effect and the laws of mechanics
Petrov, A.G. & Volodin, S.E. Dokl. Phys. (2013) 58: 349. https://doi.org/10.1134/S102833581308...

Tumbling Asteroids
Prave et al. https://doi.org/10.1016/j.icarus.2004...

The Exact Computation of the Free Rigid Body Motion and Its Use in Splitting Methods
SIAM J. Sci. Comput., 30(4), 2084–2112
E. Celledoni, F. Fassò, N. Säfström, and A. Zanna
https://doi.org/10.1137/070704393

Animations by Iván Tello and Isaac Frame

Special thanks to people who discussed this video with me:
Astronaut Don Pettit
Henry Reich of MinutePhysics
Grant Sanderson of 3blue1brown
Vert Dider (Russian YouTube channel)


Below is a further discussion by Henry Reich that I think helps summarize why axes 1 and 3 are generally stable while axis 2 is not:

In general, you might imagine that because the object can rotate in a bunch of different directions, the components of energy and momentum could be free to change while keeping the total momentum constant.


However, in the case of axis 1, the kinetic energy is the highest possible for a given angular momentum, and in the case of axis 3, the kinetic energy is the lowest possible for a given angular momentum (which can be easily shown from conservation of energy and momentum equations, and is also fairly intuitive from the fact that kinetic energy is proportional to velocity squared, while momentum is proportional to velocity - so in the case of axis 1, the smaller masses will have to be spinning faster for a given momentum, and will thus have more energy, and vice versa for axis 3 where all the masses are spinning: the energy will be lowest). In fact, this is a strict inequality - if the energy is highest possible, there are no other possible combinations of momenta other than L2=L3=0, and vice versa for if the energy is the lowest possible.

Because of this, in the case of axis 1 the energy is so high that there simply aren't any other possible combinations of angular momentum components L1, L2 and L3 - the object would have to lose energy in order to spin differently. And in the case of axis 3, the energy is so low that there likewise is no way for the object to be rotating other than purely around axis 3 - it would have to gain energy. However, there's no such constraint for axis 2, since the energy is somewhere in between the min and max possible. This, together with the centrifugal effects, means that the components of momentum DO change.

Category Education
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