Videos

Starfish are also known as sea stars. Interestingly, ‘sea star’ is also a more correct way to refer to this animal, because a starfish is nothing like an actual fish! It doesn’t have a streamlined shape or any fins for swimming. Scientifically, a starfish is actually an Echinoderm.

The water vascular system is primarily responsible for locomotion in all Echinoderms, including the starfish. It is a system of canals inside the body of the animal that contain seawater. The water vascular system also contains the madreporite, which is a sieve-like plate located on the lower surface of the sea star. It has very minute pores that filter the water and transfer it to the stone canal, which lies beside it.

#starfish #seastar #marinebiology

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons
Stock Music Source: elements.envato.com

References:
http://web.archive.org/web/20200810160053/https://www.uas.alaska.edu/arts_sciences/naturalsciences/biology/tamone/catalog/echinodermata/Cucumaria_vegae/water_vascular_system.html
https://www.ck12.org/biology/echinoderm-structure-and-function/lesson/echinoderm-structure-and-function-advanced-bio-adv/
https://books.google.com/books?id=3GvIzgEACAAJ

Original Article Link:
https://www.scienceabc.com/nature/animals/how-does-a-starfish-move.html


If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

4 2

An ocean without salt would decimate marine life and affect our global temperature and weather dramatically, making human life on Earth incredibly complicated.

There are roughly 230,000 known marine species in the ocean and an estimated 2 million more that have yet to be discovered, but if the sea were to become desalinated, we’d likely never get the chance to find those new forms of life.

Along with marine animals, marine plant life would also be affected. Underwater algae account for almost half the photosynthesis occurring on this planet! With significantly less photosynthesis and extremely volatile climatic conditions, our world would no longer support the diverse plant life it has now. The food chain itself would collapse. Most species, including humans, would not survive for long.

#desalination #watercrisis #freshwater

References:
https://www.utdallas.edu/~pujana/oceans/why.html
https://royalsociety.org.nz/assets/Uploads/Primary-CREST-and-Ocean-Investigations-Salt-Water-vs-Fresh-Water.pdf
https://www.msnucleus.org/membership/html/k-6/wc/oceans/4/wcoc4_1a.html
https://www.ecomena.org/tag/negative-effects-of-desalination/

Original Article Link:
https://www.scienceabc.com/nature/world-oceans-become-freshwater.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

8 0

Angular momentum is a physical quantity that describes the rotational motion of an object. It is a vector quantity, meaning it has both magnitude and direction, and is conserved in a system where no external torque acts on it. In classical mechanics, angular momentum is important in understanding rotational motion, particularly in systems like planets orbiting stars or particles moving in circles. There are numerous practical applications of angular momentum; for example, the angular momentum of a planet or moon in orbit around a star or planet is conserved, helping explain elliptical orbits (Kepler's laws). In quantum systems, angular momentum plays a crucial role in defining quantum states, especially in atoms and molecules. The quantization of angular momentum is fundamental to the structure of atomic orbitals.

In this video, we have explained angular momentum in simple words for beginners, using various everyday examples and analogies.

#AngularMomentumExplained #PhysicsInMotion #ScienceMadeSimple

References:
http://hyperphysics.phy-astr.gsu.edu/hbase/amom.html
https://sciencedemonstrations.fas.harvard.edu/demonstrations/angular-momentum
https://www.sciencedirect.com/topics/engineering/angular-momentum

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow us on Instagram!
https://www.instagram.com/scienceabcofficial/

Follow us on LinkedIn!
https://www.linkedin.com/company/scienceabc

Follow our Website!
https://www.scienceabc.com

112 10

The term ‘drifting’ suggests what the technique entails; the driver intentionally ‘oversteers’, causing the rear tires (or all the tires, in some cases) to lose traction, but allows the driver to maintain control over the car from its entry to its exit of a corner.

In more technical terms, when the rear slip angle (the angle between a wheel’s actual direction of travel and the direction towards which it is pointing) of the car is greater than the front slip angle, the car is said to be drifting.

#drifting #automobileengineering #mechanics

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons
Stock Music Source: elements.envato.com

Original Article Link:
https://www.scienceabc.com/sports/science-of-drifting-how-does-drifting-a-car-work.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

20 2

It’s true that stars seem absolutely motionless, like sitting ducks in the vast expanse of the blackness of space. Even so, the truth is that every star you see in the night sky is, in fact, constantly moving.

The reason stars appear to be stationary if the galaxy is constantly moving is because they are moving at a very slow pace compared to their distance from us. Even though they are moving fast in absolute terms, their motion is negligible when considered on galactic scales.

#cosmos #cosmicdistance #starscience

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons
Stock Music Source: elements.envato.com

References:
https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question18.html
https://lweb.cfa.harvard.edu/seuforum/howfar/across.html
https://www.wwu.edu/astro101/trivia.shtml

Original Article Link:
https://www.scienceabc.com/nature/universe/why-do-stars-appear-to-be-stationary-if-the-galaxy-is-constantly-moving.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

36 5

According to a study published in the American Journal of Emergency Medicines, around 20 people are admitted into emergency rooms in the US every day from a microwave oven injury or a related condition. Although most of them are due to overheated water and exploding eggs, this statistic does point out that microwaves need to be handled with caution.

The wavelength of the microwaves in the oven is roughly 12 centimeters or 4.7 inches. Therefore, for any of the microwaves to completely escape from the interior of the oven, the hole would have to be at least 4.7 inches in diameter.

While 4.7 inches seems like quite a big hole, that number is theoretical. Practically speaking, even a smaller hole would cause some leakage. The most susceptible device to microwaves is your WiFi router, as conventional wireless modems operate in the 2.4 GHz ISM (industrial, scientific and medical) band, which is very close to the operating frequency range of microwave ovens (approximately 2.45 GHz). Thus, if your WiFi router is just a few inches away from a microwave with a big hole, you can rest assured that your wireless internet will go haywire, as the kindred electromagnetic waves will commingle and disrupt one another!

#microwave #microwaveovens #microwavehacks

References:
https://doi.org/10.1016/j.ajem.2013.03.023
https://pubmed.ncbi.nlm.nih.gov/4528460/
https://doi.org/10.1088/0031-9120/39/4/003


Original Article Link:
https://www.scienceabc.com/pure-sciences/what-will-happen-if-your-microwave-oven-develops-a-hole-in-it-will-the-waves-leak.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

46 3

Astronauts can survive in their spacesuits as long as the oxygen tanks allow them to continue breathing. The two oxygen tanks and the emergency oxygen supply in current EMU suits collectively contain 6.5 to 8 hours (+ 30 minutes) worth of oxygen.

Space exploration movies and books have led us to believe that we would instantly freeze in open space, but that is not the case. While space is indeed cold (depending on where you are), it also lacks any form of matter (definition of vacuum), and the only way left for heat to leave the body is through radiation (conduction and convection require a medium for heat transfer). Given the rate at which heat transfer via radiation occurs, the human body in space would freeze within 12-20 hours.

#spacesuits #cosmos #emu

References:
https://sitn.hms.harvard.edu/flash/2013/space-human-body/
http://web.archive.org/web/20200809151747/http://scienceline.ucsb.edu/getkey.php?key=1237
https://www.nasa.gov/pdf/188963main_Extravehicular_Mobility_Unit.pdf
https://www.nasa.gov/feature/spacewalk-spacesuit-basics
https://msis.jsc.nasa.gov/sections/section14.htm

Original Article Link:
https://www.scienceabc.com/humans/how-long-can-an-astronaut-survive-in-their-spacesuit-in-open-space.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

19 1

Athletes often use wheelchairs that have slanting wheels - this type of slanting wheel assembly is known as a camber. The wheels of these wheelchairs are tilted outwards at an angle, creating a "V" shape in the front. In technical terms, there is an angle between the wheel's plane and the vertical, called the camber angle, and such wheels are commonly known as cambered wheels.

Adding camber does more than add to the appeal of the wheelchair; it provides many functional advantages too, like - the wider footprint makes the wheelchair more stable, reducing any risk of overturning. Adding camber has been observed to improve both the ergonomics and acceleration of wheelchairs, making it conducive for extended use in sports without inducing too much fatigue. In this video, we have explained cambered wheels and why athletes use them during sporting events.

#CamberedWheels #adaptivedesign #wheelchairsports

References

https://pubmed.ncbi.nlm.nih.gov/20581712/
https://pubmed.ncbi.nlm.nih.gov/22187387/
https://cloud.wikis.utexas.edu/wiki/spaces/RMD/pages/51059500/Camber+Gain+Optimization+for+Double+Wishbone+Suspension+-+Parker+Randall

Original Article Link: https://www.scienceabc.com/eyeopeners/why-do-athletic-wheelchairs-have-slanting-wheels.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow us on Instagram!
https://www.instagram.com/scienceabcofficial/

Follow us on LinkedIn!
https://www.linkedin.com/company/scienceabc

Follow our Website!
https://www.scienceabc.com

146 21

Our directional sense actually results from a multitude of several senses and brain cells interacting together. In addition to the primary five senses, particularly sight and hearing, we also use proprioception and the vestibular system to help us better comprehend the world. Proprioception tells us where we are in relation to our environment, while the vestibular system in our ears helps us balance and orient ourselves in a given space. All these tools help us go where we want without bumping into every pole or getting dizzy every time we try to orient ourselves in a moving world.

Additionally, high anxiety levels and low self-confidence could also play a role in our directional abilities. If someone repeatedly tells you that you’re the world’s worst navigator, it starts to become a self-fulfilling prophecy, as you may start believing those words too.

#navigation #neuroscience #placecells

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons
Stock Music Source: elements.envato.com

References:
https://doi.org/10.1038/s41598-020-77759-8
https://blog.ochsner.org/articles/vestibular-system-and-proprioception-the-two-unknown-senses
https://doi.org/10.1207/s15427633scc0603_1
https://doi.org/10.1038/531573a
https://doi.org/10.1038/scientificamericanmind0515-12

Original Article Link:
https://www.scienceabc.com/humans/why-do-some-people-have-a-better-sense-of-direction-than-others.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

42 7

Smelling salts are a preparation of ammonium carbonate and perfume. When sniffed, they stimulate or arouse our senses. Concentrated ammonia is the source of a noxious, powerful stench that helps in relieving faintness and restoring lucidity.

The fumes from the smelling salts irritate the delicate membranes of our nose and lungs, which triggers an inhalation reflex that abruptly alters our breathing pattern. The blood vessels in the nasal passages suddenly expand, opening the floodgates for a surge of oxygen. The rampant flow of oxygen to the brain replenishes consciousness and makes one superiorly alert or aloof instantaneously.

Several sports medicine textbooks have consistently criticized the use of smelling salts, as they display a propensity to exacerbate spine injuries. Because the fumes trigger a reflex that causes a violent head jerk, involuntarily pulling a player away from the source of abhorrence, smelling salts can gravely aggravate head or spinal injuries.

#smellingsalts #sportsscience #salts

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons
Stock Music Source: elements.envato.com

References:
https://doi.org/10.1136/bjsm.2006.029710
https://smellingsalts.org/smelling-salts-dangerous/
https://doi.org/10.1136/bjsm.2006.029710
https://www.si.com/nhl/2016/03/17/smelling-salts-nhl-players

Original Article Link:
https://www.scienceabc.com/humans/smelling-salts-harmful.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

25 2

G-LOC, or gravity-induced loss of consciousness, is an extreme result of being subject to high G forces for sustained periods of time. Particularly common in high-speed ascents, the blood tends to pool in the lower portions of the body, completely depriving the brain. This results in a temporary loss of consciousness and, consequently, a catastrophic loss of control of the aircraft.

In order to increase their threshold for G-LOC, fighter pilots must routinely subject themselves to artificially created high G-force scenarios. This is aided by ‘human centrifuges’ that rotate at high speeds to simulate extreme in-flight situations. This acclimatizes pilots and reduces the risk of G-LOC during actual air time. While they can survive high G forces for very short intervals of time, they are trained to sustain up to 9Gs, although stunt pilots often push their limits to 12G.

#gforce #gloc #passingout

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com, Wikimedia Commons, vecteezy.com
Stock Music Source: elements.envato.com

References:
https://doi.org/10.3390/ijerph17218061
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2907878/
https://commons.erau.edu/cgi/viewcontent.cgi?article=1555&context=jaaer
https://www.diva-portal.org/smash/get/diva2:1183272/FULLTEXT01.pdf&ved=2ahUKEwjggeWZ3qH6AhU7D0QIHUXHA_0QFnoECBQQAQ&usg=AOvVaw2agrqLePeogQKvH3-FG-Zl

Original Article Link:
https://www.scienceabc.com/eyeopeners/why-do-fighter-pilots-pass-out-sometimes-while-flying-what-is-g-loc.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

10 1

Aristotle suggested in 350 BC that nature abhors a vacuum, meaning that space is not empty. Between the 1600s and 1800s, many theories and laws were articulated regarding the behavior of air with respect to pressure, temperature, molecules, etc. Some of these laws include Boyle’s Law, Charles’s Law, Avogadro’s Law, the Ideal Gas Law and many more. All the laws and theories played a huge role in the discovery of space’s empty nature.

Sir Isaac Newton laid down his theory of Universal Gravitation in 1687, which explained that gravity pulls the atmosphere towards Earth’s surface. Thus, at a certain height above Earth, gravity stops acting on bodies and they drift away into space. This is why there is no oxygen in space.

#oxygen #oxygennotincluded #vacuum

References:
http://www.sciencemag.org/news/2015/05/why-there-so-little-breathable-oxygen-space
https://odb.org/US/2011/01/21/nature-abhors-a-vacuum
https://doi.org/10.1152/physiol.00053.2012

Original Article Link:
https://www.scienceabc.com/nature/universe/no-technology-first-figure-theres-no-oxygen-space.html

If you wish to buy/license this video, please write to us at admin@scienceabc.com.

Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )

SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCnI0aFeBzWBiiXiHp56kaqQ?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

Follow us on Facebook!
https://facebook.com/sciabc

Follow our Website!
https://www.scienceabc.com

34 3