Boiledbeans

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February 2, 2012

Golden

devadutta @ 11:59 pm, GMT +0000 ( 1328227142 ) Play

Brilliant video demonstrating multiple physics concepts. Identify the instrument in the center and for bonus cookie points, tell us which principle is responsible for the effect seen when UV light is cast on the instrument.

Oh, there is a Zinc plate on the instrument. That is very vital for the effect you saw.

Cracked by: Rogi , tanwi , rickde , Vishwas B Sharma , shrik , jowens , Manish Achuth , Raghuvansh and raklodramA

Answer:
Quoting Raghuvansh
The instrument is a gold leaf electroscope. The effect is the photoelectric effect – the zinc cap emits electrons under electromagnetic radiation, causing the charge reversal that makes the leaves come together again.

Points assigned by AutoRaja. Review by lazy humans pending.

9 Responses to “Golden”

  1. Rogi
    48
    10
    5

    It’s a Braun electroscope and they’re demonstrating the photoelectric effect. Release of electrons from an object via introduction of light.


  2. tanwi

    instrument: goldenleaf electroscope
    UV light effects photoelectric effect i.e. discharge of electrons resulting collapse of leaf.


  3. rickde
    4
    3
    3

    gold leaf eletroscope
    Photoelectric Effect


  4. Vishwas B Sharma
    1

    The instrument is Gold Leaf Electroscope (Kinda give away with the golden ? as the clue) and the effect you want to know for bonus points is Photo Electric effect :)


  5. shrik
    10
    7
    9

    Whatay blast from the past. That’s a gold leaf electroscope. The UV light put some photoelectric effect fundaes and discharges the leaf causing it to go limp again.


  6. jowens
    13
    2

    electroscope / photoelectric


  7. Manish Achuth
    16
    9
    8

    Gold leaf electroscope
    Photo-electric effect


  8. Raghuvansh
    1
    9
    4

    The instrument is a gold leaf electroscope. The effect is the photoelectric effect – the zinc cap emits electrons under electromagnetic radiation, causing the charge reversal that makes the leaves come together again.


  9. gold leaf electroscope


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