Science Source General Science

A young teen studying a "perpetual motion" machine.

Fractal geometry. Computer-generated image derived from a fractal set. Fractal geometry is used to derive complex shapes as are often found in nature....

Tarnished silver (silver sulfide) kettle with a circle of tarnish wiped clean. Tarnish forms on silver when it is exposed to hydrogen sulfide in the a...

Three people in an Ames room, a distorted room in which the right corner is closer to the observer than the left corner, although they appear to be at...

Two children in an Ames room, a distorted room in which the right corner is closer to the observer than the left corner, although they appear to be at...

Acid is poured into a beaker of Zinc. 3/3

Illustration of a precipitation reaction in inorganic chemistry: a colorless solution of potassium iodide is added to colorless solution of lead nitra...

Example of an exothermic reaction: potassium permanganate reacting with glycerol.

Illustration of a precipitation reaction in inorganic chemistry: a colorless solution of potassium iodide is added to colorless solution of lead nitra...

Acid is poured into a beaker of Zinc. 2/3

Burning magnesium in oxygen.

A basic chemical experiment: sulfur is broken up with a pestle.

Combustion of sulfur.

Combustion of sulfur.

Acid is poured into a beaker of Zinc. 1/3

Quantity of substance on an electronic scale.

Strobe image of a rock breaking a window.

Multiple exposure shot of a dart breaking a balloon.

Vanadium (V) oxide, a black, crystalline compound used extensively as a catalyst in industrial oxidation processes. Vanadium oxide is used as a cathod...

Strobe image of a hammer striking a nail.

Silver from Arizona; including ingot dating from the 18th century.

A farm in New York state photographed with infrared color film.

An apple orchard near Greece, New York photographed with infrared color film.

Light interference patterns cause a display of bright colors in baby soap film; here magnified 1:1.25.

Soap film patterns. When white light is shone on a soap film (a thin mix of soap and water), colored interference patterns are formed that correspond...

Light interference patterns cause a display of bright colors in soap film.

Salt cystals. 10x.

Salt crystals (NaCl), 10x.

Salt cystals. 10x.

Salt crystals (NaCl), 10x.

Gears of a wristwatch.

Gears of a wristwatch.

Gears in a transmission rated for handling 75 horsepower.

Water and gas inclusions in amber. 30 million years old. 30x

Rust corroding steel.

Corrosion on heat exchanger in refinery.

Atomization of a droplet of water into the air, as a result of removing the stopper from a diluting bottle.

Hydrometer being used to measure the specific gravity of the fluid in a battery.

View through a kaleidoscope.

Droplets of liquid.

Newspaper burning in an open fire place.

Tank of liquid helium.

Titanium rod stock for aerospace industry.

View through a kaleidoscope.

View through a kaleidoscope.

Oxidation & Reduction: Zinc around nail - Iron reduced; copper around nail, Iron oxidized.

Infrared image of Canyon de Chelly National Monument, Arizona. Red areas indicate higher relative heat emission.

Infrared image of Canyon de Chelly National Monument, Arizona. Red areas indicate higher relative heat emission.

View of trailers near Belgrade Airport, Serbia (formerly Yugoslavia). Image shot on color Infrared film. Red areas indicate higher relative heat emiss...

View of trailers near Belgrade Airport, Serbia (formerly Yugoslavia). Image shot on color Infrared film. Red areas indicate higher relative heat emiss...