Parabolic mirrors 2 | Geometric optics | Physics | Khan Academy

Поділитися
Вставка
  • Опубліковано 27 січ 2025

КОМЕНТАРІ • 36

  • @LNasterio
    @LNasterio 13 років тому +2

    having this in university year 1 exam... thanks khan, you saved me days of time.

  • @cath2junga12
    @cath2junga12 12 років тому +1

    I'm in uni taking a physics paper and this is actually the only time i've ever understood nor took interest in optics at all ! Thank you Sal you are awesome

  • @EscortsSociety
    @EscortsSociety 11 років тому +2

    You made this so much easier to understand than my professor.

  • @abdulmagedkhaled9480
    @abdulmagedkhaled9480 9 років тому +8

    Slaman Khan you're my hero,
    I wanna be like you one day, thank you so much, you saved my life several times.

  • @Fjdjdydydududu34
    @Fjdjdydydududu34 7 років тому +3

    thank you, khan academy.... now I am going to get 100% on my test

  • @taters1123
    @taters1123 11 років тому +2

    Standing ovation to you! Magnificent explanation!

  • @Syvmana
    @Syvmana 12 років тому

    YES! THANK YOU! OH MY GOD!
    Perfect video, I forgot all about this my sophomore year and now it's completely fresh!

  • @leekelly4574
    @leekelly4574 Рік тому +1

    "These lines are hard!" LOL

  • @doucoureaboubacar146
    @doucoureaboubacar146 7 років тому +1

    Thank you so much KHan Academy. Have a much better understanding

  • @LNasterio
    @LNasterio 13 років тому

    @DalaDos28 I am doing Engineering in the University of Melbourne.
    I was cramming for physics exam.
    This Video did help me alot, I got H2B for physics eventhough I was an hour late for the exam :D
    (the exam was 2 hours long)

  • @Aba9846
    @Aba9846 6 років тому

    I love you so much. You literally saved my life

  • @Nandine2
    @Nandine2 14 років тому

    videos on material balance would be nice......

  • @JoshMiltz
    @JoshMiltz 12 років тому

    2:57 will look, will look, will look

  • @Toronto2245
    @Toronto2245 14 років тому

    Grade 10 science memories. I did terrible in grade 10 science even tho i love science, but my teacher was just too much of an idiot ;'( I love you khan!

  • @derrickyang7928
    @derrickyang7928 10 років тому

    Best explanation ever

  • @hasansharif7205
    @hasansharif7205 8 років тому

    Thank You so much

  • @mbran96
    @mbran96 13 років тому +3

    University... I'm grade 8 and we have an exam of this next week... Swedish public school

  • @midnightsilverpuppy
    @midnightsilverpuppy 7 років тому

    Loved it

  • @S0ltys
    @S0ltys 11 років тому

    Thanks dude, its awesome. I hope, I pass the exam very well because of you :)

  • @ziqiyin745
    @ziqiyin745 9 років тому +1

    Not agree that the real image has the same size as actual object when the object is moved to central point.Because if the size is the same, the triangle that you drew would make the central point not be the twice distance of focal point from vertex. Can you explain it?

    • @diwangislucky
      @diwangislucky 8 років тому

      What's shown here is just a ballpark estimate.

  • @PabloH4
    @PabloH4 14 років тому

    Sal, have you tried using a ruler to draw straight lines? no sarcasm, really :-)

  • @tadm123
    @tadm123 13 років тому

    if a virtual image are images that object is not really there, dunno why this is a real image if the object is not really there too :O

  • @iluart_
    @iluart_ 12 років тому

    I know that feel...

  • @MariaMaria-wf7jl
    @MariaMaria-wf7jl 2 роки тому

    Süper

  • @kolianovic228
    @kolianovic228 9 років тому +1

    Thank you so much, i love you, would you marry me, i am ready, it is the best explanation Ever, end FOREVER, like Beatles or Pink Floyd, I AM YOUR FAN !!!!!!!!!!!!!!!!

  • @Edge0fPain
    @Edge0fPain 12 років тому

    *KHAAAAAAAAAAN!!!!!

  • @Sanchitoooo
    @Sanchitoooo 12 років тому

    :O

  • @KrazyHusy
    @KrazyHusy 12 років тому

    i think im going to fail gcse physics

  • @amirelias885
    @amirelias885 4 роки тому

    your drawing is not the neatest ? .... oh please