Why is the Sky Blue? Why are Sunsets Red?
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- เผยแพร่เมื่อ 7 มี.ค. 2023
- Have you ever looked up at the sky and wondered why it's blue? In this video, we dive deep into the science of Rayleigh scattering to uncover the mystery behind this fascinating phenomenon.
Rayleigh scattering is the scientific explanation for why the sky appears blue during the daytime. Essentially, when sunlight enters the Earth's atmosphere, it encounters various molecules and particles such as nitrogen, oxygen, and water vapor. These particles scatter the light in all directions, but shorter blue wavelengths are scattered more than the longer red wavelengths, giving the sky its distinct blue hue.
In this video, we explore the history of Rayleigh scattering and how it was first discovered by Lord Rayleigh in the late 19th century. We also delve into the physics behind the phenomenon, discussing why shorter wavelengths are scattered more than longer ones.
Additionally, we look at how other factors such as pollution and weather conditions can affect the color of the sky, and we examine some interesting examples of Rayleigh scattering in action, including the stunning blue color of the Earth's atmosphere when viewed from space.
By the end of this video, you'll have a deeper understanding of the science behind the blue sky and the fascinating phenomenon of Rayleigh scattering. So sit back, relax, and let's explore the wonders of our atmosphere together.
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Thanks for that. I think that's the first time I've actually understood how Rayleigh scattering causes blue skies and red sunsets/sunrises.
Another of the great video explaining a complex phenomenon for everybody to understand. Thanks for your efforts and time.
That's the best explanation I've seen on YT. The illustration on the whiteboard really did it for me. Thanks so much! I subscribed
I have been getting a dumbed down version of this explaination from everywhere but this video really helped me out
It is extremely interesting. Thank you very much, Jason.
Glad you enjoyed it!
If only your videos were in French, I could sit the grandkids before them. I am 57, have always been interested in sciences. Highschool chemistry and physics are far back. A career in Law has not allowed me to have real opportunities to recall much of what I learned back then. I recently discovered your channel and now watch it almost every day. Some videos I have watched more than once.
Thank you,
I now repeat « voltage is the push » like some would say « so say we all ». :)
Definitely one of my favourite question when I was a child. You never ceases to amaze me with your explanation Sir Jason!
The first one to view and comment💪🏾
That's very useful. Thank you so much for uploading such informative videos that actually helps me out so much. I usually go around telling my teacher and mates about these information you share with us and they all seems very impressed.
Thank you so much once again. It's of great help.
Glad it was helpful! Thank you and take care.
Thanks. Very interesting. Never thought of this point.
Great explanation here! We just dropped a rap explaining this topic 🔥🔥🔥🔥🔥🔥
Thank you for this lesson!
Glad it was helpful!
Great explanation. I'm hoping you can do a video on rainbows and the principle of least action.
Great suggestion!
Thanks for the video
No problem!
Good job! Thanks for the explanation! Jason seems to be standing somewhere outside of the planet earth though in the last example!
Jason, for those of us with aging ears and much slower brains; please slow down during your phenomenal, explanations of Math and Science...thank you...😊❤👏
Anything we see that has a color is reflecting the color we see except white reflects all colors while black absorbs or accepts all colors. The different colors actually emit a different temperature too I think so all things being equal you could know the color of an object by the temperature of it.
According vibgyor,red light having longer wavelength might bend towards the earth during sunset and the rest either scattered or bend away from the earth atmosphere.
Great explanation and analogy as well, no need to any additions 👍 and you're right we all at some point in our life had the same question in mind but it's quiet nice to finally know the answer :)
Well said! Thank you!
@@MathAndScience since your a heliocentric tell how can u have an atmosphere near a vacuum. And. If u believe in the moon landings u also believe those astronauts got a live telephone call from the Whitehouse on a landline in 1969 or 8 . And in 2023 we lose service on a open field
@@MathAndScience and if u don't want to man up and break out the indoctrination I understand because u can lose your channel and possibly your job if you woke up to this truth . We see way to far for us to live on a spinning waterball ik and you know the spherical trigonometry number to the 24k or 25k miles in circumference sphere earth the math tells us there's supposed to be thousands of feet of curvature depending on the circumstances. Your globe map came from a flat earth map and we both know it . Cheers mate
@@rodrigodasilva7862 lol
@@MathAndScience its fun and games til your face to face with your creator on the day death comes for your appointed time and u have to give an account to your creator ( rather u believe or not doesn't matter) on why you mislead people to this truth of creation and lied on God's creation good luck to you remember to laugh out loud when your justifiably found guilty of lying and further pushing the heliocentric lie .smh jus like a child don't wanna let go of his ball . Funny how all globe models has a sticker saying not meant for educational purposes lol there implying that we live there but can't educate teach or talk about it. Then they wonder why. Math amd science u are blindly serving the devil sad that youl never wake up from the indoctrination
So boostful sir 💓 10x
Fun facts📍📍📌💯💫
Thank you sir
Welcome!
Where can I catch one of your classes? You remind me of one of the instructors in the IBEW.
Nice
the more you know... and here i was thinking that the red color was due to contamination, silly me.. how ignorantly have i lived my life.. electromagnetism a thing of wonder.. and you explained it flawlessly. i love this channel. and you are great sir your lessons are invaluable and the more people that get exposure to this the better you make the world.. you humble me in a good way thank you sir you are MVP
Guessing before watching...
Because of the refraction of light
Very good explanation 👍, can u do a video about why object burn when enter earth atmosphere from space but nota burn object (rocket ) that travel earth to space even it more dense air in low altitude than higher...
Hello sir please can you make a video on how Remote controls work
I love your videos, Jason, but this is the first time I have ever heard Scattering attributed to absorption and then re-radiation of photons in all directions like an isotopic emitter. Isn’t Scattering a passive process in which photons of blue wavelength are the only color that are bounced by nitrogen molecular dimensions off in some single direction other than what they impinged at, and this happens repeatedly? It would seem that active isotopic re-radiation would require much energy and would create optical noise such that people in space would not be able to see features on the surface of earth... Please help me understand. And thank you for your work in educating millions!
👍🌷❤👍
🌷🌷🌷🌷🌷🌟🌟🌟🌟🌟
In California it's because of smog.
Why isn’t the sky blue and night during a full moon if the light is a reflection of the sun?
In fact, that's a pretty intresting thought. To be honest i am not sure, i am not a physicist but if i were to reason about it, i would say since the light from the moon is a negligible portion compared to the sun's intensity so it's simply not enough to cause a visible effect in the atmosphere. i.e, it can't excit the atmosphere's atoms strong enough.
@@waelfadlallah8939 great answer and thanks for responding. Here’s my follow up. The moons light is strong enough to create a shadowing effect on the earth’s surface. It’s also a white light which has a higher energy level than that of the blue light. In respect to excitement. And what does this say about a full moon in the blue skies during the day? Some of its surface is white and opaque while other parts are blue like the sky or iridescent. And it’s not uniform, more patchy. Love your name, it is awesome!
At night the moon is illuminated from the sun thereby glowing in the night sky. For us to see color, there must be atmosphere (N2 and O2) and direct sunlight for color to be 'scattered' (blue) or pass through (red). Looking at the moon affords us neither of those two requirements. The moon simply glows.
@@jonbedford5832 but it’s light propagates strong enough to create shadows on earth. Thus the description as being a reflection not just something that absorbs light. And there’s a halo around a full moon that does have a blue tint to it. And there’s also a temperature difference between the moon light and the shadow it creates. I’m just saying there’s weird things going on with the moon and it’s relationship between the earth and sun.
@@jonbedford5832 thank you for your reply.
Why clouds ☁️ color is gray
Polarization
So in a global warming apocalypse where there is no ozone layer, the sky would be what color, would it be a mix of red and blue? Just red? Just blue?
Because no global warming
Excellent, Jason. I needed a working familiarity with electromagnetic and atomic particle interaction with matter during my career as a radiation oncologist but your explanation of Rayleigh scattering is the best I've seen. Thanks!
Paul, it looks like you've inherited your facial expression from your mother.
Respected sir, could you please bifurcation your videos in to electronics, maths, physics , chemistry....that would really help. If it's already classified how do I go about it...looking forward to hear from you. Thanks!
Third comment
Way to put a dent in everyone’s beliefs. 😂
My grandson recently asked this question!!!...i gave a 1 sentence answer to him..."its bkos of light scattering"😊...but there is a long answer to this which he can understand wen he growsup...he is only 9