The Light Bulb by Noah Shpak, Paul MacPherson, Alec Roscoe.

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Presentation transcript:

The Light Bulb by Noah Shpak, Paul MacPherson, Alec Roscoe

A Break Through The invention of ductile tungsten sparked the development of the modern tungsten light bulb in Ductile tungsten has many favorable properties: a high melting point: 3,410 C low evaporation rate at high temperatures: 10-4 torr at 2,757 C tensile strength greater than steel

Structure of Today’s Light Bulb

Light Bulbs of Today The Light bulb of today has: wide, low-cost availability easy incorporation into electrical systems adaptable for small systems low voltage operation, such as in battery powered devices wide shape and size availability

The Future In the future, light bulbs will be even smaller and brighter.

Global Impacts The vast use of light bulbs makes them likely candidates for overuse and pollution.

How to Recycle a Light Bulb

Steps to Recycling Lamps are sent to recycling center Upon arrival at the recycling facility, lamps are removed from their containers and fed into specialized machine for recycling lamps. The entire process is fully automatic and incorporated in a container in which the air is brought to subpressure, thereby preventing mercury from being released into the environment.

Steps to Recycling By-product separation With the aid of a sophisticated patented air transportation system, the phosphor powder is separated in different steps from the glass and metal by- products.

Steps to Recycling Glass and aluminium stored Clean glass and aluminium end-caps are separated and stored for re-use.

Steps to Recycling Mercury is isolated The mercury bearing powder is collected in distiller barrels beneath the cyclone and the self-cleansing dust filters

Steps to Recycling Mercury is extracted The powder is then retorted to drive out the mercury.

Steps to Recycling Elements are ready for re-use At the end of the process the glass, metal end-caps, powder, and mercury can all be re-used.

Steps to Recycling Recycling certificate is issued Once the materials have been fully processed by the recycling facility, an official Certificate of Recycling will be produced and ed to you for record keeping.

Thank You

Bibliography Edison. (n.d.). Edison's Light Bulb. Retrieved September 8, 2011, from Light Bulb Picture. (n.d.). Light Bulb Picture. Retrieved September 7, 2011, from goshycab.com/wp-content/uploads/2010/09/5-light-bulb.png Mrs. Steiner's Chemistry - Part 10. (n.d.). McCann Technical School. Retrieved September 8, 2011, from The Light Bulb. (n.d.). History of the Light Bulb. Retrieved September 7, 2011, from invsee.asu.edu/modules/lightbulb/meathist.html