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ScienceABC Videos is the audio-visual wing of your favorite Science website. Here, we present you some of the whackiest ideas and scientific phenomena through animated videos in our signature style. Subscribe to our YouTube channel “ScienceABC” to never miss a video.

A modem is a very important piece of network hardware that allows a computer to send and receive data through a telephone line or cable connection. In simple words, it’s the device that connects a computer to the Internet.

The word modem is actually made by combining parts of two different words – Modulator and demodulator. As this suggests, a modem is a device that both modulates and demodulates signals that encode and retrieve information, respectively. For starters, modulation is a process of adding meaningful information to a carrier wave so that it can be transmitted over long distances.

It should be noted that if you intend to connect to the Internet wirelessly, or want to get multiple devices connected to the same network, a simple modem won’t be enough. In that case, you will need a different device called a router.

#modem #router #modulation 

References:
https://ptolemy.berkeley.edu/eecs20/week14/negotiation.html
https://kb.iu.edu/d/ahwe
http://web.archive.org/web/20120726060541/http://www.math.hmc.edu:80/%7Ejiang/modems/work.html
http://mama.indstate.edu/users/tommy/kiko/types.htm

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https://www.scienceabc.com/innovation/what-is-a-modem-what-does-it-do-router-working.html

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A modem is a very important piece of network hardware that allows a computer to send and receive data through a telephone line or cable connection. In simple words, it’s the device that connects a computer to the Internet.

The word modem is actually made by combining parts of two different words – Modulator and demodulator. As this suggests, a modem is a device that both modulates and demodulates signals that encode and retrieve information, respectively. For starters, modulation is a process of adding meaningful information to a carrier wave so that it can be transmitted over long distances.

It should be noted that if you intend to connect to the Internet wirelessly, or want to get multiple devices connected to the same network, a simple modem won’t be enough. In that case, you will need a different device called a router.

#modem #router #modulation

References:
https://ptolemy.berkeley.edu/eecs20/week14/negotiation.html
https://kb.iu.edu/d/ahwe
http://web.archive.org/web/20120726060541/http://www.math.hmc.edu:80/%7Ejiang/modems/work.html
http://mama.indstate.edu/users/tommy/kiko/types.htm

Original Article Link:
https://www.scienceabc.com/innovation/what-is-a-modem-what-does-it-do-router-working.html

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

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YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLjY1RE80b3dTQ3cw

What Is A Modem And What Does It Do?

ScienceABC II views 6 minutes ago

Dark humor is a genre of humor that is characterized by its dark or morbid content. Dark humor is not for everyone and can be seen as offensive by some. The term “dark humor” is used to describe a wide range of jokes, including those that deal with topics like death, violence, and suffering.

Peter McGraw, a behavioral scientist, along with Caleb Warren, published a paper depicting the purpose of humor and why we laugh. According to their “Benign violation theory,” a good joke, surprisingly, is a threat characterized by a wicked twist and good timing, which reveals itself to be empty. McGraw believes that jokes are funny because they violate your beliefs but turn out to be something insignificant. The violation, as the name implies, must be benign but enough to hit a sweet spot. Too lighthearted, and you risk being toothless, too offensive, and you make your audience uncomfortable.

#darkhumor #trynottolaugh #laughtertherapy 

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References:
https://leeds-faculty.colorado.edu/mcgrawp/pdf/mcgraw.williams.warren.2014b.pdf
https://www.psychologicalscience.org/observer/the-science-of-humor-is-no-laughing-matter
https://plato.stanford.edu/entries/humor/

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https://www.scienceabc.com/eyeopeners/what-is-dark-humor.html

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Dark humor is a genre of humor that is characterized by its dark or morbid content. Dark humor is not for everyone and can be seen as offensive by some. The term “dark humor” is used to describe a wide range of jokes, including those that deal with topics like death, violence, and suffering.

Peter McGraw, a behavioral scientist, along with Caleb Warren, published a paper depicting the purpose of humor and why we laugh. According to their “Benign violation theory,” a good joke, surprisingly, is a threat characterized by a wicked twist and good timing, which reveals itself to be empty. McGraw believes that jokes are funny because they violate your beliefs but turn out to be something insignificant. The violation, as the name implies, must be benign but enough to hit a sweet spot. Too lighthearted, and you risk being toothless, too offensive, and you make your audience uncomfortable.

#darkhumor #trynottolaugh #laughtertherapy

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://leeds-faculty.colorado.edu/mcgrawp/pdf/mcgraw.williams.warren.2014b.pdf
https://www.psychologicalscience.org/observer/the-science-of-humor-is-no-laughing-matter
https://plato.stanford.edu/entries/humor/

Original Article Link:
https://www.scienceabc.com/eyeopeners/what-is-dark-humor.html

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10 0

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLmZHSDFZUjBPejdj

Dark Humor: Can Laughing at Car Crashes Make You Smarter?

ScienceABC II 111 views February 21, 2024 6:15 pm

The Moon's proximity to Earth and geological similarity make it an enticing target for colonization. At just three days away, communication delays would be mere seconds. Its surface may also contain frozen water and oxygen extracted from regolith, which could sustain colonies. However, the lack of atmosphere exposes the Moon's surface to meteoroid impacts and extreme temperature swings from over 250°F to -370°F in a single day. Though travel is easier, the long-term sustainability of lunar settlements remains uncertain.

On the other hand, Mars has an atmosphere offering protection from space and more moderate temperatures. Its geology and one-third of Earth's gravity also give it an advantage for human habitation despite being a longer journey. This video compares factors like accessibility, resources, and habitats on the Moon and Mars using evidence from past missions to determine which environment could better sustain permanent colonies as a future home for humankind.

#spacecolonization #marscolonization #mooncolonization 

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
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https://www.scienceabc.com/eyeopeners/why-dont-we-try-to-colonize-the-moon-instead-of-mars.html

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The Moon's proximity to Earth and geological similarity make it an enticing target for colonization. At just three days away, communication delays would be mere seconds. Its surface may also contain frozen water and oxygen extracted from regolith, which could sustain colonies. However, the lack of atmosphere exposes the Moon's surface to meteoroid impacts and extreme temperature swings from over 250°F to -370°F in a single day. Though travel is easier, the long-term sustainability of lunar settlements remains uncertain.

On the other hand, Mars has an atmosphere offering protection from space and more moderate temperatures. Its geology and one-third of Earth's gravity also give it an advantage for human habitation despite being a longer journey. This video compares factors like accessibility, resources, and habitats on the Moon and Mars using evidence from past missions to determine which environment could better sustain permanent colonies as a future home for humankind.

#spacecolonization #marscolonization #mooncolonization

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/eyeopeners/why-dont-we-try-to-colonize-the-moon-instead-of-mars.html

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16 3

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLk5tNXN1a2QzWE1n

Mars vs Moon: Why Don't We Colonize The Moon Instead Of Mars?

ScienceABC II 459 views February 19, 2024 6:15 pm

OAuth Explained: How Does ‘Login With Facebook/Google’ Work?

ScienceABC II 75 views February 16, 2024 6:15 pm

We’re dead without oxygen, but we’d also be dead with too much oxygen. Breathing in 100% oxygen will kill in you a few days, with symptoms showing in about 24 hours. Oxygen (along with food) is one of the key ingredients for your mitochondria to produce energy via cellular respiration. But, one of the by-products of cellular respiration is reactive oxygen species (ROS). These ROS react with the molecules that form the cell, eventually disrupting the cell’s functioning and killing that cell. The first organ affected by a 100% oxygen intake is the lungs, followed by the nervous system (which is why you’ll feel dizzy and nauseous after breathing in pure oxygen for too long). 

Furthermore, understanding the intricate interplay between oxygen and nitrogen within our respiratory system sheds light on the delicate equilibrium required for optimal lung function. While oxygen is crucial for sustaining life, nitrogen plays a pivotal role in maintaining lung inflation and regulating air pressure within the respiratory system. This dynamic balance ensures the efficient exchange of gases necessary for cellular function and overall physiological well-being. Consequently, disruptions to this equilibrium, such as prolonged exposure to pure oxygen, can have profound repercussions on respiratory health and systemic function. By delving deeper into the complexities of oxygenation and its physiological implications, we gain valuable insights into the fundamental principles governing human biology and health.

Disclaimer:

* This video is for educational purposes only. 

* Ventilators are lifesaving, and doctors monitor patients carefully. 

* We're discussing what could happen if a healthy person hypothetically only breathes 100% oxygen.

#elonmusk #oxygen #toxic 

References: 
https://scied.ucar.edu/learning-zone/air-quality/whats-in-the-air
https://www.msdmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide 
https://www.bronchiectasisandntminitiative.org/Learn-More/I-am-a-Patient-or-Caregiver/Oxygen-Therapy 
https://www.nature.com/articles/pr2009174 
https://myhealth.ucsd.edu/RelatedItems/3,90904 
https://www.ncbi.nlm.nih.gov/books/NBK430743/ 
https://www.ncbi.nlm.nih.gov/books/NBK507711/ 

Credits:
Elon Musk's interview from The Joe Rogan Podcast.

Music Credits:
Toxic by Synthezx https://elements.envato.com/toxic-Q8GECPA
Mysterious Story by Purpleplanet https://elements.envato.com/mysterious-story-MVK3XZG
Gentle Marimba Documentary Interview Background by ElevateAudio https://elements.envato.com/gentle-marimba-documentary-interview-background-9M6N2QT
Halloween Magic by KakaduCreation https://elements.envato.com/halloween-magic-7UBDP9P
Jazzy Halloween by MS-Records https://elements.envato.com/jazzy-halloween-HJX59PG

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

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We’re dead without oxygen, but we’d also be dead with too much oxygen. Breathing in 100% oxygen will kill in you a few days, with symptoms showing in about 24 hours. Oxygen (along with food) is one of the key ingredients for your mitochondria to produce energy via cellular respiration. But, one of the by-products of cellular respiration is reactive oxygen species (ROS). These ROS react with the molecules that form the cell, eventually disrupting the cell’s functioning and killing that cell. The first organ affected by a 100% oxygen intake is the lungs, followed by the nervous system (which is why you’ll feel dizzy and nauseous after breathing in pure oxygen for too long).

Furthermore, understanding the intricate interplay between oxygen and nitrogen within our respiratory system sheds light on the delicate equilibrium required for optimal lung function. While oxygen is crucial for sustaining life, nitrogen plays a pivotal role in maintaining lung inflation and regulating air pressure within the respiratory system. This dynamic balance ensures the efficient exchange of gases necessary for cellular function and overall physiological well-being. Consequently, disruptions to this equilibrium, such as prolonged exposure to pure oxygen, can have profound repercussions on respiratory health and systemic function. By delving deeper into the complexities of oxygenation and its physiological implications, we gain valuable insights into the fundamental principles governing human biology and health.

Disclaimer:

* This video is for educational purposes only.

* Ventilators are lifesaving, and doctors monitor patients carefully.

* We're discussing what could happen if a healthy person hypothetically only breathes 100% oxygen.

#elonmusk #oxygen #toxic

References:
https://scied.ucar.edu/learning-zone/air-quality/whats-in-the-air
https://www.msdmanuals.com/home/lung-and-airway-disorders/biology-of-the-lungs-and-airways/exchanging-oxygen-and-carbon-dioxide
https://www.bronchiectasisandntminitiative.org/Learn-More/I-am-a-Patient-or-Caregiver/Oxygen-Therapy
https://www.nature.com/articles/pr2009174
https://myhealth.ucsd.edu/RelatedItems/3,90904
https://www.ncbi.nlm.nih.gov/books/NBK430743/
https://www.ncbi.nlm.nih.gov/books/NBK507711/

Credits:
Elon Musk's interview from The Joe Rogan Podcast.

Music Credits:
Toxic by Synthezx https://elements.envato.com/toxic-Q8GECPA
Mysterious Story by Purpleplanet https://elements.envato.com/mysterious-story-MVK3XZG
Gentle Marimba Documentary Interview Background by ElevateAudio https://elements.envato.com/gentle-marimba-documentary-interview-background-9M6N2QT
Halloween Magic by KakaduCreation https://elements.envato.com/halloween-magic-7UBDP9P
Jazzy Halloween by MS-Records https://elements.envato.com/jazzy-halloween-HJX59PG

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 )

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239 18

YouTube Video VVVjTjNJdUlBUjZGbjc0RldNUWY2bEZBLk1CeHdGM0o4TThv

Why Pure Oxygen Will Kill You, But The Oxygen In The Air Won’t

Science ABC 4.1K views February 15, 2024 4:31 pm

Heat capacity is defined as the amount of heat energy required to raise the temperature of a given mass of a substance by one unit. Specific heat capacity and molar heat capacity are properties derived from the heat capacity of a material.

Specific heat is defined as the amount of heat required to raise one unit of mass of the substance by 1 unit of temperature. On the other hand, molar heat capacity is defined as the amount of heat required to raise 1 mole of a substance by 1 Kelvin. Like specific heat, molar heat capacity is an intensive property, i.e., it doesn’t vary with the amount of substance.

The heat capacity of a substance determines where and when it can be used. For example, the handles of utensils are manufactured from materials with a high heat capacity to ensure the user’s safety. On the other hand, thermometers are manufactured from materials with a low specific heat capacity to detect even the smallest temperature fluctuations.

#heatcapacity #thermodynamics #specificheat 

References:
https://www.usgs.gov/
http://web.archive.org/web/20200110083656/http://www.dartmouth.edu:80/~physics/labs/writeups/adiabatic.pdf
https://www2.chem.wisc.edu/deptfiles/genchem/netorial/modules/thermodynamics/enthalpy/enthalpy3.htm
https://www.usgs.gov/special-topics/water-science-school/science/specific-heat-capacity-and-water

Original Article Link:
https://www.scienceabc.com/pure-sciences/what-is-molar-heat-capacity-and-how-do-you-calculate-it.html

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Heat capacity is defined as the amount of heat energy required to raise the temperature of a given mass of a substance by one unit. Specific heat capacity and molar heat capacity are properties derived from the heat capacity of a material.

Specific heat is defined as the amount of heat required to raise one unit of mass of the substance by 1 unit of temperature. On the other hand, molar heat capacity is defined as the amount of heat required to raise 1 mole of a substance by 1 Kelvin. Like specific heat, molar heat capacity is an intensive property, i.e., it doesn’t vary with the amount of substance.

The heat capacity of a substance determines where and when it can be used. For example, the handles of utensils are manufactured from materials with a high heat capacity to ensure the user’s safety. On the other hand, thermometers are manufactured from materials with a low specific heat capacity to detect even the smallest temperature fluctuations.

#heatcapacity #thermodynamics #specificheat

References:
https://www.usgs.gov/
http://web.archive.org/web/20200110083656/http://www.dartmouth.edu:80/~physics/labs/writeups/adiabatic.pdf
https://www2.chem.wisc.edu/deptfiles/genchem/netorial/modules/thermodynamics/enthalpy/enthalpy3.htm
https://www.usgs.gov/special-topics/water-science-school/science/specific-heat-capacity-and-water

Original Article Link:
https://www.scienceabc.com/pure-sciences/what-is-molar-heat-capacity-and-how-do-you-calculate-it.html

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4 0

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLjVSTWtkVEtrZnk4

Molar Heat Capacity: Definition, Formula, Equation Explained in Simple Words

ScienceABC II 59 views February 14, 2024 6:15 pm

Photocopiers have a way to detect what they are copying actual currency. This is because all the major economies in the world have adopted the EURion constellation or similar pattern on their currency notes. The EURion constellation is a pattern of disjointed circles that is visible on most banknotes. If they are not clearly circles, then the pattern can also be disguised as numbers or musical notes!

Central banks across the world have collaborated with each other through the Central Bank Counterfeit Deterrence Group (CBCDG) to restrict any attempts to forge their currencies. By collaborating with each other, they came up with an even more robust counterfeit deterrent technology called Counterfeit Deterrence System (CDS), in addition to the EURion constellation. With CDS, not only will your photocopier deny the printing of banknote currency, but even your Photoshop software will refuse to work on images of currency bills. This means that you cannot open and edit banknote photos in popular image-editing software programs.

NOTE: This video has discussed why you cannot photocopy money, but that does not mean we encourage you to try it. Counterfeiting is a serious crime that should not be taken lightly. Even attempting to photocopy banknotes could put you behind bars!

#EURionConstellation #CounterfeitDeterrenceSystem #CurrencyForgeryPrevention

References:
https://doi.org/10.1109/DEXA.2010.86
https://www.rbi.org.in/scripts/BS_PressReleaseDisplay.aspx?prid=13520
https://rulesforuse.org/en/about-cbcdg
https://helpx.adobe.com/photoshop/cds.html

Original Article Link:
https://www.scienceabc.com/eyeopeners/cant-photocopy-scan-currency-notes.html

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Photocopiers have a way to detect what they are copying actual currency. This is because all the major economies in the world have adopted the EURion constellation or similar pattern on their currency notes. The EURion constellation is a pattern of disjointed circles that is visible on most banknotes. If they are not clearly circles, then the pattern can also be disguised as numbers or musical notes!

Central banks across the world have collaborated with each other through the Central Bank Counterfeit Deterrence Group (CBCDG) to restrict any attempts to forge their currencies. By collaborating with each other, they came up with an even more robust counterfeit deterrent technology called Counterfeit Deterrence System (CDS), in addition to the EURion constellation. With CDS, not only will your photocopier deny the printing of banknote currency, but even your Photoshop software will refuse to work on images of currency bills. This means that you cannot open and edit banknote photos in popular image-editing software programs.

NOTE: This video has discussed why you cannot photocopy money, but that does not mean we encourage you to try it. Counterfeiting is a serious crime that should not be taken lightly. Even attempting to photocopy banknotes could put you behind bars!

#EURionConstellation #CounterfeitDeterrenceSystem #CurrencyForgeryPrevention

References:
https://doi.org/10.1109/DEXA.2010.86
https://www.rbi.org.in/scripts/BS_PressReleaseDisplay.aspx?prid=13520
https://rulesforuse.org/en/about-cbcdg
https://helpx.adobe.com/photoshop/cds.html

Original Article Link:
https://www.scienceabc.com/eyeopeners/cant-photocopy-scan-currency-notes.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 )

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26 0

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLm5mV0NrdDk1T2pr

Why CAN'T You 'Photocopy' Money?

ScienceABC II 262 views February 12, 2024 6:10 pm

The reason airplane flights take longer when traveling west is because of the different speeds of rotation on Earth. The rotational velocity of Earth decreases as one goes from the Equator to the poles. This means that a place on the Equator will experience higher rotational velocity than a place on the poles. Therefore, it takes longer to fly west than it does to fly east.

Jet streams are high-speed winds that flow from west to east at altitudes of 5-7 miles above the Earth's surface. These winds can reach speeds of up to 200 mph and play a significant role in regulating global climate. When airplanes fly with these jet streams, they take less time to reach their destination, as the fast-blowing winds effectively "piggyback" them, saving both time and fuel.

#flighttime #longflight #relativevelocity 

References:
http://web.archive.org/web/20100709195100/http://www.iupui.edu/~g107/mod03/lecture03.htm
https://www.weather.gov/jetstream/jet
https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/wind/what-is-the-jet-stream

Original Article Link:
https://www.scienceabc.com/eyeopeners/why-do-airplane-flights-take-longer-when-traveling-west.html

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The reason airplane flights take longer when traveling west is because of the different speeds of rotation on Earth. The rotational velocity of Earth decreases as one goes from the Equator to the poles. This means that a place on the Equator will experience higher rotational velocity than a place on the poles. Therefore, it takes longer to fly west than it does to fly east.

Jet streams are high-speed winds that flow from west to east at altitudes of 5-7 miles above the Earth's surface. These winds can reach speeds of up to 200 mph and play a significant role in regulating global climate. When airplanes fly with these jet streams, they take less time to reach their destination, as the fast-blowing winds effectively "piggyback" them, saving both time and fuel.

#flighttime #longflight #relativevelocity

References:
http://web.archive.org/web/20100709195100/http://www.iupui.edu/~g107/mod03/lecture03.htm
https://www.weather.gov/jetstream/jet
https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/wind/what-is-the-jet-stream

Original Article Link:
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26 2

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLlVWWVdid1hIeHhJ

Why Does It Take 'Longer' to Fly WEST?

ScienceABC II 306 views February 9, 2024 6:15 pm

As you ‘floor’ the pedal, there is a sudden spurt of adrenaline in your body, which in turn has many effects: your blood pressure rises instantly, your heartbeat races, your body temperature rises, and you can feel a slight tingling in your limbs.

The exhilaration that we get from speeding down the highway in our cars is more or less a modern development. Prior to the invention of automobiles, the speed with which humans could traverse was probably limited to the speed of a horse.

Professor Enda Duffy, in his book The Speed Handbook, explains how cars have transformed the human experience and perception towards speed. He argues that automobiles have made us averse to slow speeds, as traveling at high speeds became the new normal in the post-WW2 era.

#speedthrills #adrenalinerush #highspeed 

References:
http://web.archive.org/web/20210304070202/https://shc.stanford.edu/news/research/speed-exhibition
https://crashstats.nhtsa.dot.gov/Api/Public/Publication/812451

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As you ‘floor’ the pedal, there is a sudden spurt of adrenaline in your body, which in turn has many effects: your blood pressure rises instantly, your heartbeat races, your body temperature rises, and you can feel a slight tingling in your limbs.

The exhilaration that we get from speeding down the highway in our cars is more or less a modern development. Prior to the invention of automobiles, the speed with which humans could traverse was probably limited to the speed of a horse.

Professor Enda Duffy, in his book The Speed Handbook, explains how cars have transformed the human experience and perception towards speed. He argues that automobiles have made us averse to slow speeds, as traveling at high speeds became the new normal in the post-WW2 era.

#speedthrills #adrenalinerush #highspeed

References:
http://web.archive.org/web/20210304070202/https://shc.stanford.edu/news/research/speed-exhibition
https://crashstats.nhtsa.dot.gov/Api/Public/Publication/812451

Original Article Link:
https://www.scienceabc.com/pure-sciences/why-do-we-feel-so-thrilled-by-speed.html

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10 0

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLmFDX1ppSGVfczdn

Why Do We Feel So 'Thrilled' By SPEED?

ScienceABC II 141 views February 7, 2024 6:15 pm

Sonobuoy: How Does This Portable SONAR System Bust Enemy Submarines?

ScienceABC II 236 views February 5, 2024 6:15 pm

As a plane flies, fast-moving air enters both the jet turbine engines. This fast-moving air is compressed as it passes through layers of fan blades inside the turbine. It’s at the compressor stage that a portion of the hot air is ‘bled off’ from within the turbine. Therefore, the air generated at this point is known as bleed air.

Now, this bleed air is very hot, with a temperature range of a couple hundred degrees Fahrenheit, so it needs to be cooled first. That’s why this hot bleed air is allowed to expand and pass through a heat exchanger so that it cools to a comfortable temperature. This cool, filtered air is then dispersed in the passenger cabin at a pressure that humans can comfortably breathe.

#aviation #heatexchanger #breathable 

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As a plane flies, fast-moving air enters both the jet turbine engines. This fast-moving air is compressed as it passes through layers of fan blades inside the turbine. It’s at the compressor stage that a portion of the hot air is ‘bled off’ from within the turbine. Therefore, the air generated at this point is known as bleed air.

Now, this bleed air is very hot, with a temperature range of a couple hundred degrees Fahrenheit, so it needs to be cooled first. That’s why this hot bleed air is allowed to expand and pass through a heat exchanger so that it cools to a comfortable temperature. This cool, filtered air is then dispersed in the passenger cabin at a pressure that humans can comfortably breathe.

#aviation #heatexchanger #breathable

Stock Video Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Image Source: elements.envato.com , pexels.com , pixabay.com, freepik.com
Stock Music Source: elements.envato.com
Original Article Link:
https://www.scienceabc.com/eyeopeners/how-do-people-get-breathable-air-oxygen-in-airplanes.html

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22 4

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLnBuWWdGVUNtb3dz

How Do Airplanes Get the Oxygen We Breathe?

ScienceABC II 301 views February 2, 2024 6:11 pm

The main reason commercial aircraft have not gotten any faster in recent decades is due to fuel efficiency. Airplanes consume more energy the faster they fly, so airplane manufacturers favor slower speeds to save on operating costs. Furthermore, a modern air passenger has much less incentive to shell out more money to travel faster. It’s interesting to note that airplane manufacturers are technically capable of producing faster commercial planes, but there simply isn’t much demand for them outside of military applications.

Moreover, as planes become faster, they inevitably tend to become more noisy, particularly when they break the sound barrier. This conflict is something that manufacturers want to avoid.

#supersonic #fuelhog #aerodynamics 

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References:
https://cs.stanford.edu/people/eroberts/courses/ww2/projects/jet-airplanes/how.html
https://howthingsfly.si.edu/media/turbofan-engine
https://doi.org/10.17226/23490
https://engineering.mit.edu/engage/ask-an-engineer/how-does-a-jet-engine-work/

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The main reason commercial aircraft have not gotten any faster in recent decades is due to fuel efficiency. Airplanes consume more energy the faster they fly, so airplane manufacturers favor slower speeds to save on operating costs. Furthermore, a modern air passenger has much less incentive to shell out more money to travel faster. It’s interesting to note that airplane manufacturers are technically capable of producing faster commercial planes, but there simply isn’t much demand for them outside of military applications.

Moreover, as planes become faster, they inevitably tend to become more noisy, particularly when they break the sound barrier. This conflict is something that manufacturers want to avoid.

#supersonic #fuelhog #aerodynamics

References:
https://cs.stanford.edu/people/eroberts/courses/ww2/projects/jet-airplanes/how.html
https://howthingsfly.si.edu/media/turbofan-engine
https://doi.org/10.17226/23490
https://engineering.mit.edu/engage/ask-an-engineer/how-does-a-jet-engine-work/

Original Article Link:
https://www.scienceabc.com/innovation/why-have-commercial-aircraft-not-gotten-any-faster-in-recent-decades.html

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18 0

YouTube Video VVVuSTBhRmVCeldCaWlYaUhwNTZrYXFRLm1ycjJPMDNDRlhB

Why Don't Commercial Planes Fly Faster?

ScienceABC II 718 views January 31, 2024 6:15 pm