Science Source December 28, 2009 DVD

Cloud-to-Ground lightning, with dendrite branches, over Tucson, Arizona.

Cloud-to-Ground lightning during a summer storm in Tucson, Arizona.

Multiple cloud-to-Ground lightning, with dendrite branches, over Tucson, Arizona.

Cloud-to-Ground and Cloud-to-Cloud lightning during a summer storm in Tucson, Arizona.

Cloud-to-Ground lightning during a summer storm in Tucson, Arizona.

Multiple cloud-to-Ground lightning, with dendrite branches, over Tucson, Arizona.

Optical disk used to store data.

Residents push a car through deep flood waters in Tampa, Florida.

Close-up of single-crystal photovoltaic cells. Photovoltaic cells are made of a semiconductor such as silicon or gallium arsenide. The electrons in th...

A supermarket laser scanner scans the product's bar code.

Lightning.

Moon and Venus over city lights of Los Angeles.

A tornado in Sumner County, Kansas; (3/13/1990).

A tornado west of Caldwell, Kansas; (3/13/1990). Note the airplane flying in front of the twister.

A tornado west of Caldwell, Kansas; (3/13/1990). The Tornado traveled over 30 miles and was 500 yards wide at its base.

USA, Pennsylvania, Philadelphia, Another office building Goes up in the centre City Area.

Construction tools on wooden board.

USA, Workmen repairs section of the Brooklyn Bridge with Manhattan in Background..

Image of a rope that is breaking.

Sunrise over Hyannis, Cape Cod.

Men working on roof of house.

Cloud-to-Ground lightning over Tucson, Arizona.

Symmetrical cloud-to-Ground lightning, with dendrite branches, over Tucson, Arizona.

The planet Neptune.

Circuit board wiring. View of the wiring tracks on a computer circuit board. Parallel and interlinking tracks serve to link up resistors, capacitors,...

Circuit boards are used to provide connections between different electronic components such as microchips in a computer. This could represent the worl...

Drought Water Level Gauge indicates severe drought in the Everglades.

Iguazu Falls, Brazil.

Cloud-to-Ground lightning over Tucson, Arizona.

Lightning.

Silhouette of construction worker on girder.

Silhouette of construction worker on girder.

Building contractor looking at blueprint.

House under construction.

Earthquake Damage to bridge across Rio Estrella south of Limon, Costa Rica from quake of 4-22-91. Smaller vehicles could still cross.

Earthquake damage to coastal road just south of Limon, Costa Rica.Quake of 4-22-91.

Pancake volcano domes on Venus, taken by the spacecraft Magellan mission.

Volcanic gases bubble from a sulfur-encrusted underwater geothermal vent at Dobu Island, Milne Bay province, Papua New Guinea, (SE coast).

Snowflake. Colored computer-enhanced image of a snowflake, taken from a resin cast. Snow crystals exhibit a general six-fold symmetry. Each crystal is...

Early CAD system used for designing cars. CAD is a powerful tool in the design of many common products, as design changes may be quickly incorporated...

Double rainbow arcs over cabin during a summer shower. Panguingue Creek, Alaska.

Double rainbow arcs over cabin during a summer shower. Sun provides solar and aesthetic power to cottage. Panguingue Creek, Alaska.

Double Rainbow arcs to spruce trees ( Picea spp.) in late afternoon shower. Panguingue Creek, Alaska.

Double rainbow descends to spruce trees ( Picea spp.) of the taiga on north side of Alaska Range. Panguingue Creek.

New Jersey, Haddonfield, Man standing on ladder painting house exterior.

A radiological image of Tycho's Supernova, which occured in 1572; its remnants can still be observed.

The annular solar eclipse; San Clemente, CA; 1/4/92. Multiple exposure at six minute intervals, starting at 4:50PM.

Computer generated graphic of a circuit board.

Computer generated image of representing a design concept for an electronic circuit board. Each component is represented by a symbol denoting its func...

Superconducting wire.