What is Infrared Radiation & Electromagnetic Spectrum? - [4]
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- เผยแพร่เมื่อ 1 ก.ค. 2024
- More Lessons: www.MathAndScience.com
Twitter: / jasongibsonmath
In this lesson, you will learn what infrared radiation is, and how we can use it to visualize the heat signature of objects. We will discuss that infrared light is simply a part of the electromagnetic spectrum that we can't see with our eyes, because the photoreceptors in our eyes aren't receptive to the energy level of a photon in the infrared range. We will learn how William Herschel accidentally discovered infrared light by measuring the temperature of the different colors of sunlight after the light was split by a prism into the colors of the rainbow. Herschel found that the hottest part of the spectrum is actually outside the visible region, and we now call these infrared waves. We will also discuss blackbody radiation, and learn that all bodies at a given temperature emit radiation, including in the infrared.
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![What is a Plasma? Is it the 4th State of Matter? - [5]](/img/tr.png)
![How Does a Laser Work? Quantum Nature of Light - [3]](http://i.ytimg.com/vi/Gbfj_FlEjI4/mqdefault.jpg)
Great job. I'm 72 and love knowledge and learning new ideas. As a younger man I was a poor student but always curious. You have hit the sweet spot of teaching for struggling students with your patience, explanations and detail oriented presentations. Please continue your good work. I've a lot of catching up to do.
Really appreciate this!
I’m 63, and it’s the same for me. As a kid I was wild about the possibilities in math and science, but I was a poor student. I love this channel.
I love your comment, Dave, very much. By the way, 75 is just the middle of your age. I want people to live long and happy. Curiosity is one of the components of longevity. Live long and healthy, Dave )
Couldn't have said it better myself!
That's what make learning science so special, its the reason for me to live
I'm trying to learn here. I'm a construction worker who had a troubled past (difficult childhood & up bringing) so I never really paid attention in school. Now in my later years I've been trying to self-educate. I'm a slow reader, so I've learned to harness and take advantage of the wonderful power of the internet and TH-cam. On multiple occasions throughout my childhood, myself and my parents were informed that I possessed an above average IQ despite my inability and unwillingness to participate class.
I've always been interested in why things are the way that they are. Literally everything. Why are we here, how did the universe and Life Begin, how are we able to see, what is fire, space ,time, ETC, ETC, on and on.......
Anyway thank you for sharing these videos. The videos that you share, as well as the videos of many other content providers on TH-cam have helped me tremendously with educating myself and expanding my knowledge in my adult life.
I was a bit confused when you brought up Planck's constant. Just a suggestion, when trying to reach out to the lay person and explain what Planck's constant is. Instead of referring to it as just a number perhaps you could refer to it as a baseline number, a point of reference in which to compare other measurements to.
I figured it out but I was thrown off for a second.
You are the best teacher I've ever had .Really appreciate you sir.
I appreciate how you step through the basics to build a comprehensive understanding that can make sense of different perspectives and enable more accurate predictions when the distinctions you detail are shifted.
This brings to mind the origins of EM radiation and types of EM waves.
For example sunlight begins with plasma reactions as impulse EM radiation which is not the same as the chemical or stimulated emissions in our atmosphere (sine wave EM radiation) the singular type of radiation you cover here.
Past researchers have asserted that these waves have different propagation and impact on various materials (for example, without an atmosphere, stellar plasma impulses are invisible or transparent to our eyes without a transmuting atmospheric effect.
This behavior was replicated by Paul Pantone with his GEET reactor that used a pressure induced Z-pinch plasma reaction in steel tubes that became transparent when the reaction became strong enough (freaked him out, fearing his engine using the plasma for fuel would exceed the physical limits of operation, he also did not fully understand the differences of plasma reactions vs. chemical reactions which could not transform the chemistry the way he measured his reactor operating. He had a cold fusion, plasma reactor designed using tricks to optimize fuel efficiency (crazy luck using CIV in magnetic fields with polarized chemicals. Similar to how stars form.)
Detail how the wave shapes differ especially the magnetic fields and how they physical reactions differ. Tesla found EMPs can be totally unaffected by most matter, and extremely reactive with specific matter that resonated with very specific wavelengths (melting or exploding on contact) he also claimed the impulse transmissions were superconducting (how starlight can travel billions of light years).
Great thanks for talking fast! Love fast information. I did the Hershel experiment every year in Chem classes.
I love the way you ended the video. As usual, you always leave something to inspire other for continuous study and further more to explore undiscovered things of the universe. Because I guess you know for sure that human kind just know very little about the universe. Dark matter, dark energy and may be anti matter are still hard to understand concept to majority audience. It is so motivational that you mentioned at the end. Thank you!
Yes we do know so Little! Thank you!
Brilliant maths Jason - covering yourself with timing. 10minutes +/- 12minute videos. I look forward to the -2minute video.
Lol yes! I’ll run it backwards or something. ;)
Jason. You are the man. I bought the full course bundle a little over a year ago and have been working through the material since. I can't express enough how much I appreciate your approach to teaching/learning, as well as your efforts to cover such a broad scope of knowledge in such careful and thoughtful detail. I watched the back of my eyelids through most of school so what you do is greatly assisting my confidence for the future. I hope you are doing well, I hope life is good to you, and I hope you know you have great purpose.
Thank you Brandon. So happy to hear this! Take care and keep in touch!
I agree with you, Brandon. Jason's channel is the best and progressive
I love the fact this man has , or is expanding his TH-cam channel in different areas of education 😁.
Thank you! You explain everything crystal clear. I love your new project 10 Minutes science. Because of your clear explanation I have a passion to understand more and go deeper. I truly appreciate your work!
You're very welcome!
Another great video. Can’t wait for the next one!
Thanks very much!
Please always go over your 10 minutes. Your videos are amazing.
THANK YOU... SIR...!!!
HAPPY NEW YEAR TO YOU AND YOUR FAMILY...!!!
You make math and physics fun to learn:-)
Hope you will create a follow up video of the Electromagnetic Spectrum where you use the equation for calculating the UV-index or estimating the amount of sun power that can be harnessed in a solar panel as a practis sample.
Thank you and will do!
BRIGHT explanation !
Brilliantly done. Thank you
Very nice series, Keep it up!
Thanks, will do!
I like the way you have explain this lesson
Thank you!
Cool contents, can't wait for upcoming videos.
Thank you so much!
Lotta knowledge I appreciate your videos
Very interesting.. recently I published a book in Amazon Kindle on my Metaphysical Inquests into Nature: Mind and body as instruments.. as an outcome of that, now I have planned to start with Plasma.. your talks give me confidence that I would be able to do better progress..though I am a beginner on this subject.. one of my postulate is as human beings we have optimised our resources, faculties, senses, sensitivity..to maximize our survival.. now I understand our eyes and skins as what they do..reminded of boyhood lying on hot rock bed on a summer.. sensing heat and reaching dehydration..in a week my skin would go dark and would take three months inside office or cold place to regain some shades back..
Thanks so much!! Loved the video, learned a lot! 🤩💡
Such a nice explanation....
That was very interesting. Thank you very much.
Welcome Helen!
great explanation!
Thank you !
Really appreciate the time an effort you put in cheers for all the help an knowledge you provide From Australia
Thank you and cheers!
I learned something new after this video. Thanks !
Welcome!
Thank you teacher for teaching lesson is the best way keep going dear teacher i say always happy day🎁👑💯💕❤️🤞👌
We're done with that lesson... I'm studying in the Philippines.. but thanks.. anyway I have a question about increasing decreasing increase decrease.. can that be the topic of your next video please🥰
Awesome video 🤍
I LOVE YOU
My hero,my teacher thank you for your time
Informative and valuable lesson with clear explanations and outstanding teaching method. Thank you very much.
Thank you Lily!
You are welcome, Jason.
Thank you for your information 👍
You are very welcome!
Wishing you and your family a Happy and Healthy New Year. Thanks for sharing your knowledge and enlightening the world
Thank you Paul. You too!
Outstanding
thank you for teaching us simple folks
Excellent keep it up
Thanks so much.
Great video. Just a question: referring to your graph (wavelength distribution of the sunlight), shouldn’t be the highest temperature somewhere in between violet and red as there is a maximum between 400 and 700 nm?
great job ... thank you :)
Thanks once again sir
Welcome!
So nice thanks sir
Thank you
You are good teacher.👻💖
Im your fan from Germany
Thank you for the great videos
They all very rich information.
Can you please do a video about the mechanism of the Aromachemicals in fragrance!
Great suggestion!
@@MathAndScience im glad to hear that 😊
I love this guy can learn from him,
I know that at some point more mathematics will be introduced, but he has a beautiful way of slowly building innate understanding and greasing the skids for easier consumption of the numbers and formulas.
Thanks for the great video. According to the Black Body Curve graph 16:45, the green/yellow portion of the visible spectrum arrive at Earth in greater amounts than red. Since green/yellow are also higher frequency/energy than red, it seems that the highest temperature should be seen as either green or yellow. However, the image at :45 showed the cool portions of the house as green and yellow. Could you elaborate?
Fascinating, but it gives me the dirigible blues. Do you have a watts description - calculation of loads tutorial?
Great. Thanks
Why is infrared radiation associated with heat even though the EM spectrum beyond it (including visible light) is also heat and even hotter? Perhaps because it is the part of the spectrum where we FIRST FEEL heat, even if we can't see it. The sense of touch before the sense of sight.
Thank you very much ♥️
You're welcome 😊
Good morning sir,
I am Nazeefi watching from Nigeria a Computer Science Student as well. I really find your lessons very interesting.
Sir, please can you explain more about what differentiates between AM and FM in radio station and elaborate on mathematical methods as we do it more in computer?
Thank you
So actually i think that we humans dont mainly focus on the features of the moon but i think that the way the moon pulls water with force has a relationship with us humans sleeping
thanks
Isn’t red/infrared warmer because its frequency is more efficient at shaking the atoms? Like you can’t get a swing go high if you just keep on pushing and shoving it frequently - you need the right cadence there. Or microwave for heating food as another reference.
Electricity Is Star Light, Inclusive of the Green Solar Spectrum Hue. With-Out Ultra-Violet Hues, Human Skin Color Appears "Earthy".
1. "Newton's colour circle combines the spectral colours red, orange, yellow, green, cyan, indigo, and blue-violet with the nonspectral colour magenta (a mixture of blue-violet and red light beams), as shown in the figure." Colour - Visible Spectrum, Wavelengths, Hues | Britannica
2. "The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies...This frequency range is divided into separate bands, and the electromagnetic waves within each frequency band are called by different names; beginning at the low-frequency (long-wavelength) end of the spectrum these are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays at the high-frequency (short wavelength) end." Electromagnetic spectrum - Wikipedia
3. "The solar spectrum is the range of electromagnetic radiation emitted by the sun, extending from the ultraviolet to the infrared region. It is composed of photons with various wavelengths, which define the spectrum's shape and intensity. It can be defined in terms of solar radiation or solar irradiance." Solar Spectrum: Solar Radiation and Irradiance | Ossila
4. "Hue, or color, is the main part of what people mean when they say “skin tone.” Most human skin is some variation of orange, either brighter or darker, more red or more yellow. Hues in the skin can be a result of genetics, or can be affected by things like sunlight, ambient light temperature, and blood flow." What is Skin Tone? Post Production for Perfect Skin | PRO EDU
Respectively.
Tanika Nakeya Lewis, 6127
I am from Bangladesh 10 grade student . I love your videos ❤️. I started watching them from my 6th grade
Wow... and I thought infrared had some special 'heat' property for all these years! I guess it's just about intensity. Explains why I have a blue laser (not even U.V.) that burns everything in sight (high power input?). Thank you as ever sir for freely sharing this section of your knowledge. 👍👍👍
For the same wattage, which colour DIODE laser is more effective at burning a black material? I would have thought higher wavelength? I guess it's far more complex; energy absorbsion/chemistry etc.? Dunno. Somebody please help! Thanks.
Question: why is heat from a flame warmer and heat the house better than heated air from a furnace?
How did he found the location of infrared radiation so that he measured it's temperature?
Can you shed some light on the Ultra violet spectrum?
is temperature is EM waves mr jason ?
I'm no physicist and it's probably just a fluke but I did guess the reason for the temperature difference correctly as an issue of density. I guessed this due to something I suspect is similar and would like to know if it's correct: is it not the same issue as we find in a fluid flowing in a pipe where volume or cross-sectional area, velocity, and pressure are constants and the pressure drops when the velocity increases because the volume can't change? And so with the light, an increase in energy in the photon would increase velocity and therefore reduce density or pressure? And the slower photons, released in equal volume, volume, velocity, and density being constants such than one reduced means one of the others increased, and lower energy making a slower velocity and thus the density is increased? Is this right or not? Can anyone let me know?
Great knowledge. Great question, what don't we interact with, what don't we have senses for..... like dogs who smell things we can't smell at all........ do a lesson on things we can't sense
All electricians that does TV Antennas should watch this video, because they know absolutely nothing, but yet in Australia they do TV Antennas, because RF Technicians doesn't exist in Australia
Nice 👍
Before watching... Infra refers to below or less. Red in reference to red in the visible light spectrum
"ROY-G-BIV"
So my guess is below red in the visible light spectrum 👍
...or something close to that
Nice! Interesting!
since infrared can't be seen
audibly 20hz to 20k hz is the theoretical human hearing range... so by analogy anything lower than 20hz or above 20k we can't hear either
So that's what I was thinking
the like number 1000 😍
I agree with you for the most part but the idea or existence of dark energy and dark matter I would question
So a metal cup filled with dry ice and both the dry ice and the cup are far below zero, the infrared camera would not be able to "see" the cup of dry ice as long as the temps of both were below zero. Yes?
21:50 messed up the explanation for the human perception of infrared radiation as heat. it's because our bodies are infrared sensors.
So basically when we put sufficient heat in a metal
we are effectively shifting his "emitted photons" left - straight into the visible spectrum.
Because the higher the energy the higher the wavelength frequency.
Your explanation of Planck's constant is a bit confusing. You say it's just a number.
I'm trying to learn, I'm no expert. But wouldn't it be better referred to as a baseline number instead of just a number. A point of reference in which to compare other measurements to?
Any Electro-Magnetic Spectrum Hue Inclusive of Green Electro-Magnetic Spectrum Hue Is Visibly Perceptive As the Electric Perspective of the Electro-Magnetic Spectrum: Electricity Is the Present "State" of Radon, As Photon: Photon Is the Quantitative Fundament of Radiative Visibility, and Radon Is the Quantitative Fundament of Radiation, As the Fuel Source In and Of It-Self of Radiation Activity.
Blue Electro-Magnetic Spectrum Is Usually of Fuels Such As Gasoline, and Is the Hottest Temperature Color of Gasoline, As a Gas, where-as, Photon Electro-Magnetic Spectrum Hues of Star-Light, As "Black" Light, Actually Is the Hottest Electro-Magnetic Solar Spectrum Temperature, and Violet Is the Electro-Magnetic Solar Spectrum Color Hue Visibly Perceptive As the Red Color Spectrum.
In the Electro-Magnetic Spectrum Chart of Temperatures of the House Depicted in the Video, the Coolest Temperature Is Depicted By the Electro-Magnetic Color Spectrum Blue, With a Range from the Blue Electro-Magnetic Color Spectrum, As Temperature, to the Black/White Electro-Magnetic Color Spectrum, As Temperature, With my Rationale As Electro-Magnetic Spectrum Temperatures Depicted As Fuel : Fire/Flames : Electricity.
My Rationale Includes Atmospheric Charged Particles of Wind, Air, any External to Internal, and Converse Debris, At the Entrance Levels, Inclusive of any Windows, Door-Knobs, Etc.
When Infra-Red Technology Is Utilized, the Possibility Exists that the Actual Violet Electro-Magnetic Color Spectrum Is Utilized to Depict the Hottest Temperatures In the Violet Electro-Magnetic Color Spectrum, As the Communication of Temperature At Its Hottest, of the Specific Depiction.
Conclusively, By my Rationale, the Internal Structures of the House Chart, Depicted By the Video, With-Out Infra-Red Technology Key-Codes, Will Other-Wise, Depict Black/White Electro-Magnetic Color Spectrum Ranges, only If the Internal/Core House Temperatures Were At the Hottest of any Actual Black/White Electro-Magnetic Spectrum Temperatures, and Not With-In any Actual Violet Electro-Magnetic Spectrum Temperatures:
Rationally, With any Actual Electronic and Digital Key-Codes, Correlative to the Actuality of the Electro-Magnetic Spectrum and Its Color Spectrum, By Electro-Magnetic Spectrum Temperatures, every Perspective of the Truth of the Electro-Magnetic Color and Temperature Spectrums Will Accurately [Equitably] Scale.
1. "From the visible spectrum, we know violet would glow the hottest, and blue glows less hot." UCSB Science Line
2. "No matter how high a temperature rises, blue-white is the hottest color we are able to perceive." Seeing heat | Causes of Color (webexhibits.org)
3. "Black is a little bit different because it absorbs all of the colors on the spectrum. It takes in all of that light and then transfers it into energy that is radiated into heat. Because of this, black is the hottest color.Jul 14, 2021" Weather Academy: Color Vs. Heat (knoe.com)
4. "Gamma rays and X-rays are the radiations with the highest energy. Only objects of temperatures from a million to hundreds of millions degrees Kelvin (K) emit this kind of radiation. Matter falling into a black hole or a neutron star is accelerated and heated up to millions of degrees.Jan 21, 2017" Electromagnetic spectrum (sun.org)
5. "Gamma rays also stream from stars, supernovas, pulsars, and black hole accretion disks to wash our sky with gamma-ray light." Gamma Rays | Science Mission Directorate (nasa.gov)
6. "The fundamental particle of light is both ordinary and full of surprises. What physicists refer to as photons, other people might just call light. As quanta of light, photons are the smallest possible packets of electromagnetic energy.Jun 29, 2021" What is a photon? | symmetry magazine
7. "Radon is an odorless, invisible, radioactive gas naturally released from rocks, soil, and water. Radon can get into homes and buildings through small cracks or holes and build up in the air. Over time, breathing in high levels of radon can cause lung cancer. Radon and Your Health (cdc.gov)
8. Radium, like radon, is radioactive and is found in small quantities in nature and is hazardous to life if radiation exceeds 20-50 mSv/year." Radium and radon in the environment - Wikipedia
9. "Although the names radon and radium sound similar, they are completely different chemical elements. The key difference between radon and radium is that radon is a noble gas, whereas radium is a radioactive element. However, both these elements are radioactive because they have large atomic numbers.May 31, 2020" Difference Between Radon and Radium | Compare the Difference Between Similar Terms
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Tanika Nakeya Lewis, 6127
I'm more than likely wrong but isn't the atom bomb sort of achieved in this same manner with splitting one atom that splits two atoms that splits four atoms and then eight into sixteen atoms and so on and so on??
Would revelations be some kind of huge big waves? A nice fantasy, I think, after all, magic is the mother of mathematics.
It appears that infrared 'exists' throughout the spectrum. Evidenced by the 80 to 86 degree difference.
Well, infrared is just a label given to a range of wavelengths in the spectrum.
@@MathAndScience a bit complicated for sure..liked your laser video, bbetter than my 11990 intro to lasers class in a ABQ. N.M.
Am I the only one that is wondering why the infrared is hotter than yellow/visible red? According to your chart and theory, the temperature should be dropping dramatically after visible light
It’s a good question, and there are a lot of reasons, but I couldn’t cover all of them in a single video. Remember that the sky is blue, that will probably be a separate video one day, but basically the sky is scattering different wavelengths of light, so what we see on the ground is after the atmosphere has scattered the different wavelength of phototons. Also, the atmosphere absorbs different frequencies as well, so what we’re seeing on the ground is after the atmosphere has absorb different wavelengths. Then there’s also what I mentioned in the video, which is the sun does not radiate all wavelengths of photons equally. So in the video when I was talking about measuring the temperature of infrared and the experiments, it was mostly to motivate and show you how it was discovered. What we measure on the ground as far as the temperature is after all of these are facts are taken into account and that’s why it can seem a little backwards.
we are all glowing
Оч интересно
Natural follows normal distributions.
Yes!
I think what confuses people the most is they think of EMR as light instead of emf and having certain emf visible to humans. Even though technically they are the same because they are packets of oscillation.
Where it gets confusing is people understand light needs a source but an antenna radiating radio waves isn’t visible. Different emf have different sources. Imagine seeing visible light propagating off an antenna 😂 I would like to see 700Thz through antenna. Not sure if that would even be considered possible.
4:30 here, you made the common mistake of assuming that we see every wavelength in the "visible spectrum", even after you just concluded we can in fact see only blue, red, and/or green wavelengths. those high tech devices will be able to detect "orange" light when our puny eyes see black, wrongly assuming the object isn't radiating color until further inspection.
9:08 yes, the falsely named "visible spectrum" is a tiny sliver of the full breadth of light frequencies, and yet we still only see a tiny sliver of that spectrum, too, having receptors activated by only RGB. we don't know what 420 nanometer packets look like.
how ironic to speak so blindly about the phenomenon of sight.
This is the way the alien in the movie, "Predator" was able to track his prey!
Some snakes also do it this way.
👍👍👍👍👍👍👍👍👍👍👍👍
O.m.g. can we repeat ourselves more?
It would have been better to say or show that solar radiation os approx 50% Infrared...
Watch out for the gamma rays its a weapon
as per color why red fire is not hotter than blue fire 🔥.blue fire is considered hotter as compared to 🔵 blue.
Can cats detect IR radiation?
But! Violet is violet because it is blue mixed with red. In the color spectrum, red turns into violet. How can these be polar to each other?
There is RGB and CMYK they are not the same
Edee. Wow
*_We can't see or interact with_* #DARKMATER *because we're not sensitive enough yet to quantify it,* *_or is it violent enough?_* ⚛️
*_Untill next time._* 🤘🐲🤘
- and PS - the "lady showing up red (brown)" - could you explain why the hair is also warmer? And the clothes is NOT same temp as other peoples clothes? LOL.
Bro you gotta be a cool dad
Man that’s the nicest thing I’ve heard today. Thank you!
This is 13 additional minutes
You sound like young sheldon
Please don't apologize for F.
Thanks much!
Nice one - a difficult subject to "understand" and bring across - not only the E=hf part - but also the fact that red light is not that powerful/dangerous - but a red Laser can be pretty dangerous - so why? (Amplitude - amount of photons). I would however ask you to go back and check out Emily du Chatelet - who seems to have worked on the stuff you finish off with (a poker which is red hot but then is no longer visually hot but can still be felt as warm from a distance) - should she in reality be acknowledged with the "discovery" 60 years before? And if you also look at the fact that Williams sister Caroline had been working with him for 28 years by the time (arguably being the smarter of the 2??) Should she be totally forgotten because of sexism of the day? She published an astronomic catalogue 2 years later under her brothers name - just saying! I recon girls rock and history should be revisited and rewritten where it is questionable. Keep up the education.
That 1 girl that was red had the vaccine ;)
Cause she got banged hard , oopos sleeping when writing this shit.
Fahrenheit is not evil! Get over it
Looks like yellow/green comes from the sun with the most abundance. So, why isn’t that color the hottest?