Physics

What gases are in a fluorescent and incandescent bulb?

  1. 👍
  2. 👎
  3. 👁
  1. Old fashioned incandescent lamp bulbs, which are becoming obsolete, are filled with argon. Newer (and brighter) "halogen" incandescent bulbs are filled wth bromine vapor. The bromine allows the tungsten filament to operate at a higher temperature of about 3500 K.

    Fluorescent bulbs used to be filled with argon and mercury vapor. More modern and more efficient ones are filled with krypton and mercury vapor. The light comes from the mercury vapor and phosphors on the inner tube wall that re-emit ultraviolet light from the mercury vapor.

    For more info, see
    http://www.lamptech.co.uk/Documents/FL%20Gases.htm

    1. 👍
    2. 👎
  2. Thanks you!

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. science

    A circuit in a home provides power to a light fixture. The homeowners want to use a compact fluorescent bulb instead of an incandescent bulb. Compact fluorescent bulbs can produce as much light as incandescent bulbs but with less

  2. English

    Which of the following statements in a research paper would need citation? A. Washington, D.C. is the capital of the United States. B. The landing on the moon is one of the most exciting events in recent history.*** C.

  3. science

    1.Which car has the greatest efficiency?(1 point) a 900 kg car that travels 15 km per liter of fuel a 900 kg car that travels 20 km per liter of fuel a 1,200 kg car that travels 15 km per liter of fuel a 1,200 kg car that travels

  4. Science

    Electric bulb is Marked 60 watts 120 volt what is the resistance of filament of bulb

  1. physiscs

    a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the 75- w bulb to the resistance of the 50 w bulb?

  2. Physics

    Six light bulbs are connected in parallel to a 9.0 V battery. Each bulb has a resistance of 3.0 ohms. What is the current in each bulb?

  3. Science

    Henri Becquerel expected to see only weak images on the photographic plate containing the uranium salt because he thought (1 point) A.fluorescent minerals needed direct sunlight to produce radio waves. B.fluorescent minerals

  4. Energy question

    How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W) that costs $0.50?

  1. Physical Sci

    An incandescent light bulb produces light when electrons flow through the (1 point) * air. * glass. * filament. * vacuum. 2. Many streets and parking lots are illuminated with (1 point) * laser lights. * tungsten-halogen lights. *

  2. physics

    The filament in an incandescent light bulb is made from tungsten (resistivity 5.6 x 10-8 Ù·m). The light bulb is plugged into a 120-V outlet and draws a current of 2.36 A. If the radius of the tungsten wire is 0.00464 mm, how

  3. IPC

    Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. how does the color of the light bulb determine the amount of energy of the electromagnetic

  4. Physics

    We can reasonably model a 75 W incandescent light bulb as a sphere 6.0 cm in diameter. Typically, only about 5% of the energy goes to visible light; the rest goes largely to non-visible light infrared radiation. (a) What is the

You can view more similar questions or ask a new question.