Why sky appears blue

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  • Опубликовано: 25 дек 2024

Комментарии • 749

  • @mokshagna0403
    @mokshagna0403 7 лет назад +22

    Please adjust the volume
    It is low
    It is good and very imformative

  • @raghuramreddy856
    @raghuramreddy856 6 лет назад +14

    this type of teaching make us scientists 😍😍
    THANK U DELTA STEP

    • @DeltaStep
      @DeltaStep  6 лет назад +1

      We are glad that you enjoyed this video and would recommend you to register at DeltaStep.com to get access to 5000+ amazing video lectures, 1 million+ questions with detailed solutions, tests, games, report card and much more. Also get access personal tutors to resolve your doubts. To know more, please feel free to contact us at 9674645164 or email us at info@deltastep.com.

  • @krishna-zh8el
    @krishna-zh8el 5 лет назад +14

    Your way of explanation is awesome.. Keep it up

  • @architect3927
    @architect3927 5 лет назад +2

    I treat u like my teacher.....cuz...i write notes while ur explaning...it makes me easy ...thx u soo much👍👍👍👍👍👍👍👍

    • @DeltaStep
      @DeltaStep  5 лет назад

      We are glad that you enjoyed this video and would recommend you to register at DeltaStep.com to get access to 5000+ amazing video lectures, 1 million+ questions with detailed solutions, tests, games, report card and much more. Also get access personal tutors to resolve your doubts. To know more, please feel free to contact us at 9674645164 or email us at info@deltastep.com. Download our learning App: bit.ly/2LBOVlR

  • @surajkumar-ok7dm
    @surajkumar-ok7dm 4 года назад +3

    Hey , i am a physics honours student and after so many pages of derivations i derived this relation . I was scrolling and saw your video i clicked and believe me this is the best explanation i found .
    Really excellent work .

    • @DeltaStep
      @DeltaStep  4 года назад +1

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  • @priyabratadash381
    @priyabratadash381 5 лет назад +3

    The explanation is beautiful but towards end of the video, as you have discussed that why during sunrise and sunset the sky appers reddish, I think it is not sufficient.You must say that both scattering and phenomena of refraction plays an important role in colouring the sky in to red. During sunrise and sunset the Sun is at farthest position from earth. First of all when the sun light reaches the atmosphere they undergoes refraction as they passes through the layers of atmosphere, for which blue light bent the most and red light the least.Along with bending blue light and other short wavelength light components get scattered much. So refraction and scattering of sun light consequence in blue light escaping out of sight of observer on Earth & red light undergoing a perfect bending to reach up to the sight of observer on Earth.

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @pragyakatiyar9316
    @pragyakatiyar9316 5 лет назад +3

    Thank u sooooo much sir....you r the only one who explain scattering of light in the best manner....

  • @richagarg1605
    @richagarg1605 7 лет назад

    Deltastep is the best online material and help available..... and this boy who takes the sessions is outstanding.....

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @rajkamalchaudhary7180
    @rajkamalchaudhary7180 6 лет назад +2

    u are explaining very clearly from basics, we difficult to find like u. Thanks a lot

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @DineshYadav-dt2gq
    @DineshYadav-dt2gq 5 лет назад +4

    Its fantastic, now i dont to cramb it any more.
    Thank you so much!

    • @DeltaStep
      @DeltaStep  5 лет назад +1

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  • @chandranr9367
    @chandranr9367 4 месяца назад +1

    Excellent teaching 👏

    • @DeltaStep
      @DeltaStep  4 месяца назад

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  • @nurhafizah4960
    @nurhafizah4960 5 лет назад +3

    Thank you!! the best explaination ever!!

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @mr.azeemakatheprofessional2498
    @mr.azeemakatheprofessional2498 7 лет назад +25

    very nice video.. hats off man I understand everything and cleared all my doubts.. thumps up

    • @DeltaStep
      @DeltaStep  6 лет назад +2

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    • @mohansai4333
      @mohansai4333 6 лет назад +2

      Sir wave length of violet is less comparative to blue why sky not appear violet

    • @anjulpatel5792
      @anjulpatel5792 6 лет назад

      +Mohan Sai
      voilet, indigo and blue all have small wavelength so they all scatter and the overall or combined effect is blue

    • @itsscience
      @itsscience 5 лет назад

      mr. Azeem aka THE PROFESSIONALIST
      See at home
      ruclips.net/video/_DWVcCx_JVg/видео.html

    • @27arundhatikundu82
      @27arundhatikundu82 4 года назад

      @@mohansai4333 violet is not a primary colour. And violet comes from Blue

  • @sudheer596
    @sudheer596 8 лет назад +4

    We are able to see a color just because it is reflected by that object. As sky is reflecting the blue color we are able to see the blue color. Sun appears red during sunrise and sunset because all the colors of Vibgyor get absorbed in the long path of atmosphere it is traveling and what all remains is red.

  • @sahilbhoge7661
    @sahilbhoge7661 6 лет назад +2

    You r the only one who got successful in teaching me this concept
    😃

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @wiseguynation8722
    @wiseguynation8722 7 лет назад +2

    you're a great teacher fam! HIGH VIBRATIONS TO U

  • @learningisfun488
    @learningisfun488 4 года назад +1

    Finally I understood this. Thank you very much sir. It was very helpful.

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @owiredustephen2625
    @owiredustephen2625 4 года назад +2

    Great teacher. Awesome presentation. i have tried several times to understand this thing but in vain but you have made it simple and easier for me. Thank you

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @abhishekgupta6049
    @abhishekgupta6049 3 года назад

    Thank you DELTA STEP ...
    now i realised these things
    1.The development of interest of a student towards a subject depends a lot upon techniques used by teachers
    2. formulae do not complicate science, they make it more comprehensible
    3. Teaching is challanging and fun at the same time
    4. WE NEED THIS QUALITY TEACHING IF WE ARE EXPECTING OUR FUTURE GENERATIONS TO BE REVOLUTIONARALY CURIOUS

    • @DeltaStep
      @DeltaStep  3 года назад

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  • @milanpaudel6225
    @milanpaudel6225 5 лет назад +2

    your animations are fabulous which made me more easy to understand thanks for it and keep uploading more videos☺️☺️

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @HOUSHAPARIHARIYAACADEMY
    @HOUSHAPARIHARIYAACADEMY 4 года назад

    I am not science student. While explaining a lesson I needed to know this. You explained it sooooo well. Thanks a million.

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @jesusvega9886
    @jesusvega9886 5 лет назад +8

    Best explanation ever, congratulations from Peru !!!

  • @kat3172
    @kat3172 6 лет назад +4

    Amazing explanation
    😘 😘

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @nishaannaphilip3501
    @nishaannaphilip3501 6 лет назад

    Most beautiful and informative vedio..complete understanding guaranteed..

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @anupamdeo904
    @anupamdeo904 7 лет назад +1

    Thank you very much!...
    I studied this in 10th,now IAM in my last year of post graduation, finally I understood it clearly.
    Special thanks to you and your team

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @mahamafzal8392
    @mahamafzal8392 4 года назад

    MashaAllah ap bht a6a samjhatay hain.

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @suraganiramanjaneyulu2058
    @suraganiramanjaneyulu2058 7 лет назад +1

    Amazing u r soo clear while explaining
    Tqsm..!

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @patitpabanpanja2236
    @patitpabanpanja2236 4 года назад

    What a explanation 😳😳!!
    Just spellbound
    👌👌👌👌👌

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @Aditya-oj1zf
    @Aditya-oj1zf 5 лет назад +1

    Great video and explanation

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @renukasahu5138
    @renukasahu5138 7 лет назад +1

    I just love the way you teach and talk sir.. thank you so sooo sooooo much sir

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @vandanavaishali8535
    @vandanavaishali8535 5 лет назад

    Thankuu so much sirr ..............
    Ur explanation is just Awesome 😊😊

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @archanaraj8240
    @archanaraj8240 4 года назад

    You are very good explainer every thing was explained clear

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @shivaprasadmath8508
    @shivaprasadmath8508 2 года назад +1

    The evening sky looks orange/red not because of the increased distance between the sun and the earth as you have said, but actually because the sunlight travels longer distance in the atmosphere before it reaches us.

    • @DeltaStep
      @DeltaStep  2 года назад

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  • @satyasaibabakaja8948
    @satyasaibabakaja8948 6 лет назад

    Superb sir i liked ur way of explanation☺☺☺☺

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @soniasan513
    @soniasan513 7 лет назад +1

    Really Appreciated. I understood the concept well. Thanks

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @charanjeetkaur2170
    @charanjeetkaur2170 6 лет назад +1

    extremely brilliant teaching...keep up guy

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @samchouhan9258
    @samchouhan9258 5 лет назад +1

    Bro but violet has least wavelength so ....
    Why you not mentioned violet

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @shaikkhadarshareef8011
    @shaikkhadarshareef8011 6 лет назад

    Your explanation is superb

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @parthamandal7279
    @parthamandal7279 5 лет назад +1

    Violet & indigo lights wavelength are less than blue then according to your explanation our sky should look like violet & indigo also
    Plz explain this

    • @DeltaStep
      @DeltaStep  5 лет назад

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    • @markoadhikari8071
      @markoadhikari8071 4 года назад

      That's a good point...And the reason why the sky doesn't appear violet or indigo is because of the fact that the retina in our eyes are designed to perceive red,green and blue colours (primary colours) more effectively than other colours...say orange, yellow, violet, indigo, etc...So, among these 3 least wavelength radiations that are perfectly scattered, blue is more effectively perceived by the human eye...so, sky appears blue....hope this clear ur doubt 😃👍

  • @aaahu737
    @aaahu737 3 года назад +1

    Thanks sir.....
    Really nice.. 🙏🙏

    • @DeltaStep
      @DeltaStep  3 года назад

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  • @guddusingh2445
    @guddusingh2445 7 лет назад

    very nice way of teaching and the language is very easy to understand 😃😃

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @marwaabdalla4676
    @marwaabdalla4676 6 лет назад +1

    This video is amazing, best explaining ever. Thanks a bunch

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @s.jyothiramesh326
    @s.jyothiramesh326 5 лет назад +1

    Superb explanation 👌👌👌
    It is very helpful for us thank you........

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @shaikhabdullah7500
    @shaikhabdullah7500 4 года назад +1

    Red light has a maximum wavelength
    Green light has a moderate wavelength
    Blue light has a minimum wavelength

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @Deadbond1
    @Deadbond1 7 лет назад +23

    good.. but the explanation of the red is poor. You need to mention the distNce of light traveling in the atmosphere is higher during sunset than it is at noon. so scattering is much more :)
    Hello to you from lebanon..

    • @haimlevy654
      @haimlevy654 5 лет назад

      but he did almost at the end of the video

    • @asifumar9006
      @asifumar9006 5 лет назад

      Mad mistake at the end

  • @naveengouli1982
    @naveengouli1982 6 лет назад

    Ur the best teacher i ever seen

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @aryahus1358
    @aryahus1358 4 года назад

    Your classes made my studies simple .thank you

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @moglirao8839
    @moglirao8839 5 лет назад +9

    Distance between sun and earth is 150 million kms a mindboggling fact,really😂😂😂😉😉😉😉 .Who thought it was 1km

    • @LadyLacquerista
      @LadyLacquerista 4 года назад

      LOL

    • @Ajay0pp
      @Ajay0pp 4 года назад

      Fascinating

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @shrikrishnakhanzode8536
    @shrikrishnakhanzode8536 4 года назад

    So easily it could be understood ! Thank you.

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @sirajulsarkar9942
    @sirajulsarkar9942 7 лет назад +1

    Amazing... I m vry much benifit. Thnk u gys.

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @sohanpatidar3060
    @sohanpatidar3060 6 лет назад +1

    Thank you I saw many videos before this video but my concept was not clear now I understand

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @a354681
    @a354681 6 лет назад +1

    Thank you very much for publishing this. You did a very good job. God bless you1

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @happygharu6110
    @happygharu6110 6 лет назад

    Sir,yeh sunset aur sunrise k time, blue rays and green scatter ho kr hamari eyes pe kyun nahi padti,jaise k blue colour of sky wale case mein tha

  • @Muleslover
    @Muleslover 4 года назад +1

    Love delta step. I love your lecture and i slute the educator for upload best comments.

    • @DeltaStep
      @DeltaStep  4 года назад

      We are glad that you enjoyed this video and would recommend you to register at Deltastep.com to get access to 5000+ amazing video lectures, 1 million+ questions with detailed solutions, tests, games, report card and much more. Also get access to personal tutors to resolve your doubts. To know more , please feel free to contact us at 9674645164 or email us at info@deltastep.com. Download our learning App: bit.ly/3akrBoz

  • @ilmasaifi9455
    @ilmasaifi9455 7 лет назад +2

    Awesome explanation.with nice method of technology.. practically seen things are more understanding. ... thanks upload more...

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @uzmashamim8707
    @uzmashamim8707 7 лет назад

    awsm keep it up...... vry much imprssive.... good interlectual skills..

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @Propel-Passion
    @Propel-Passion 5 лет назад +2

    Nice, your video is the best in the whole list of this topic. I wanted to go simple but deeper, and the was no such video of my choice but u have solved the problem. But you should make your videos a bit funny. It helps to the watcher. 😇😇😀😀

  • @Cheeriot
    @Cheeriot 6 лет назад +6

    Amazing explanation! Thanks for your sharing.
    Suggestion: you should say "much less" instead of "very less".
    You're talented, keep it up

  • @helalahmed5931
    @helalahmed5931 6 лет назад +4

    I see a contradiction in his concept. At 5:53 he says blue is more scattered than red(it passes through), so we see the sky as Blue at day time. At 11:00 he again says the blue scatters more and the red passes through so we see red at sunset! The color which scatters more is the color we see in the sky, this is the main concept(?). Isn't it?

    • @neerajkarmchal3916
      @neerajkarmchal3916 6 лет назад

      Yes bro.......m also confused here

    • @iMaDeMoN2012
      @iMaDeMoN2012 6 лет назад

      10:00 This is a bad animation. The angle of observation should be from the polar position and the rotation should be counter-clockwise when looking down upon the northern hemisphere.

    • @imtiazaligouhar8752
      @imtiazaligouhar8752 5 лет назад

      @CodeNI8 he say that blue light scattered therefore we have appear the sky blue but the red is not scattered then how it appear red?

  • @nareshbholo123
    @nareshbholo123 6 лет назад

    Teachers told me why sky appears blue but didn't explained like this.. Thank u so much sir... Now I can explain it to my students..

    • @DeltaStep
      @DeltaStep  6 лет назад +1

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  • @poojamourya6803
    @poojamourya6803 7 лет назад

    Nice way of explanation it helps me a lot to understand thank you

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @muhammadamin-nr4si
    @muhammadamin-nr4si 5 лет назад

    Lajavaaab.......,i do not have words to appreciate u

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @anikamatanhelia6536
    @anikamatanhelia6536 7 лет назад +1

    superb
    can u pls upload a video on how actually wavelength affects scattering?

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @amarjitjanju9218
    @amarjitjanju9218 6 лет назад

    Liked ur explanation very well

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @user-qy5gt6nq1h
    @user-qy5gt6nq1h 6 лет назад +1

    Can you please tell me it's answer in relation with Tyndall effect
    But the video is very very good and even very helpful

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @tanayasharma7776
    @tanayasharma7776 8 лет назад

    very good explaination.you will get more views soon

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @priyankachandak6668
    @priyankachandak6668 7 лет назад

    Awesome way of teaching

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @nabinlama2553
    @nabinlama2553 7 лет назад

    nice presentation ....that pictures helps us to understand more...so please keep uploading

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @srinivasulubasani3129
    @srinivasulubasani3129 5 лет назад

    Your explanation is good

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @shivakrishna2495
    @shivakrishna2495 4 года назад +1

    Sir voilet also has minimum wavelength as blue has... Then y we can't see the sky as voilet color

    • @DeltaStep
      @DeltaStep  4 года назад

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    • @shivakrishna2495
      @shivakrishna2495 4 года назад

      @@DeltaStep clear my dout sir.. Then I will subscribe

  • @ghazalajamal7028
    @ghazalajamal7028 6 лет назад +8

    Plzz increase the volume of yours sound you explain it very well plzzz......!

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @priyaashuuu4917
    @priyaashuuu4917 6 лет назад

    Nice video helped me a lot in my studies

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @anaya2351
    @anaya2351 5 лет назад +1

    It's very useful to me thanks

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @brycemoravec5461
    @brycemoravec5461 7 лет назад

    So if we see red when the sun to earth distance is greatest but blue when it is shortest, shouldn't that mean at some point during the day we would see a green sky?

  • @subramanid1750
    @subramanid1750 5 лет назад

    Superb explanation,

  • @VJDANCEFACTOR
    @VJDANCEFACTOR 8 лет назад +14

    nice way of teaching...very clear to us...

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @palmitot
    @palmitot 7 лет назад +3

    Thank you! Come again!
    just kiding man, nice presentation! congrats

    • @DeltaStep
      @DeltaStep  6 лет назад

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    • @fl_qwsome
      @fl_qwsome 4 года назад

      👍🏻👍🏻

  • @vinitakumari202
    @vinitakumari202 5 лет назад

    Understood very nicely

  • @vrushalisupe6323
    @vrushalisupe6323 3 года назад

    Excellent explaination 🙏

    • @DeltaStep
      @DeltaStep  3 года назад

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  • @-lunar_soil
    @-lunar_soil 5 лет назад +1

    Nice explanation... Keep it up👍👍

  • @ManoriJayasinghe-l3x
    @ManoriJayasinghe-l3x Год назад

    Thanks a lot ,,very interesting and very clear explanetion

    • @DeltaStep
      @DeltaStep  Год назад

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  • @sanjaybishwas5644
    @sanjaybishwas5644 6 лет назад +13

    Best explanation !!!

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @banumathis9859
    @banumathis9859 4 года назад

    Sir i have a doubt!
    The density atmosphere is very high near the earth compared to up above the earth...i.e.,the particles of atmosphere are of larger in size which usually scatters light colour of larger wavelength...then why the sky doesn't looks red since the last refracted ray is from the layer of atmosphere near the earth (large colloidal particles)??????

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @vijetajha999
    @vijetajha999 6 лет назад

    Your explanation is very clear I can understand everything easily

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @7outofthebox747
    @7outofthebox747 7 лет назад

    You say the blue light reaches earth 8:50 But why do we only see the sky as blue if this color passes the atmospheric sky reaching our eyes?
    We also see the sea as blue, since it reflects the sky.

  • @asterwild
    @asterwild 7 лет назад

    Really awesome...I do follow all your videos. It helps me out always

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @chanbajwa1000
    @chanbajwa1000 7 лет назад +1

    very good and simple explanation,......need some more video like this for daily life sci phenomenon....

    • @DeltaStep
      @DeltaStep  7 лет назад

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  • @vaibhavmaurya5931
    @vaibhavmaurya5931 5 лет назад

    Sir pls make your playlist as like a seperate class and chapter name both ...thnks

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @sammalik8170
    @sammalik8170 4 года назад

    Sir i have a question fir you , violet colour has least wavelength so sky must look violet bcoz least wavelength most scattering .

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @ashwinikhaire8356
    @ashwinikhaire8356 6 лет назад

    Very good explanation.easy to understand. thanks

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @sameeralam8829
    @sameeralam8829 7 лет назад

    I really like your videos. Please keep uploading.

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @drgururajacs7365
    @drgururajacs7365 6 лет назад +1

    Sir... Really good explanation.... Please upload grade 12 physics apso

    • @DeltaStep
      @DeltaStep  6 лет назад

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  • @musicdevotion___sunu__380
    @musicdevotion___sunu__380 5 лет назад

    It's very useful
    Thank you SIR 👍👍👍👍👍👍👍👍👍👍👍

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @a.a.hasan13
    @a.a.hasan13 5 лет назад

    Excellent explanation .........!!!

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @Flipkartvarified
    @Flipkartvarified 4 года назад

    Best teaching method

    • @DeltaStep
      @DeltaStep  4 года назад

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  • @bharathishivakumar5851
    @bharathishivakumar5851 5 лет назад

    Really nice and well explained

    • @DeltaStep
      @DeltaStep  5 лет назад

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  • @amritachakraborty8584
    @amritachakraborty8584 5 лет назад +2

    Ur voice seems to be quite low during the videos

  • @sanyamshah3434
    @sanyamshah3434 6 лет назад

    NICE EXPLANATIONS ..... KEEP IT ON ...... UPLOAD MORE VIDEOS AND PLEASE UPLOAD BASED ON BIOLOGY .... PLEASE SIR

  • @lukechen3841
    @lukechen3841 Год назад

    Thanks for your presentation. You explained it very clearly and made it easier to understand. However, I am a little confused at the end when you explained the red sky during sunrise and sunset. You mentioned that the distance between the earth and the sun is greatest during those times. Shouldn’t this distance be more or less the same in the short space of hours between sunrise and noon? And any variation due to the observer’s position on the earth is negligible due to the tiny earth radius compared to the distance to the sun? Thank you.

    • @DeltaStep
      @DeltaStep  Год назад

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  • @rakshajunghare124
    @rakshajunghare124 6 лет назад

    I like ur videos very because ur videos are very easy to understand .... thank u for such nice videos😊😊😊👌

    • @DeltaStep
      @DeltaStep  6 лет назад

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