The evolute spiral angle is a wave pattern that mimics the wave of the sea.

Evolute Spiral Angles

The evolute spiral angle is a wave pattern that mimics the wave of the sea.

The evolute spiral angle is a wave pattern that mimics the wave of the sea.

Evolute Spiral Angles

The evolute spiral angle is a wave pattern that mimics the wave of the sea.

The evolute spiral border is a wavelike pattern that mimics the wave of the sea. Designed by Sebastian Serlio during the 16th century. The interstices (small opening) between the lines is decorated with leaves and flower buds.

Evolute Spiral Border

The evolute spiral border is a wavelike pattern that mimics the wave of the sea. Designed by Sebastian…

An illustration of a boy in a sailor suit waving.

Boy in Sailor Suit Waving

An illustration of a boy in a sailor suit waving.

A young boy twirling his arms in the air.

Boy Twirling Arms

A young boy twirling his arms in the air.

The evolute spiral central junction is a wave pattern that mimics the wave of the sea.

Evolute Spiral Central Junction

The evolute spiral central junction is a wave pattern that mimics the wave of the sea.

Two couples waiting at each other, one pair from the doorstep of a house, the other from an old convertable car.

Couples waving

Two couples waiting at each other, one pair from the doorstep of a house, the other from an old convertable…

The circular evolute spiral is a wave pattern that mimics the wave of the sea. It is a round circular panel.

Circular Evolute Spiral

The circular evolute spiral is a wave pattern that mimics the wave of the sea. It is a round circular…

The evolute spiral frieze is a wavelike pattern that mimics the waves of the sea. Its interstices (small openings) between the lines is decorates with leaves and flower buds. This design is found in the Otto-Heinrich building of Heidelberg Castle in Germany.

Evolute Spiral Frieze

The evolute spiral frieze is a wavelike pattern that mimics the waves of the sea. Its interstices (small…

A diagram demonstrating the motion a frog makes whilst swimming. In this stage of the frog's life, the frog makes waved lines while moving through the water.

Swim Lines of Frog

A diagram demonstrating the motion a frog makes whilst swimming. In this stage of the frog's life, the…

A young girl waving her arms in the air.

Girl Waving Arms

A young girl waving her arms in the air.

Work of the waves in cutting away rocky coasts. Successive stages in the destruction of the island of Helgoland.

Destruction of Helgoland

Work of the waves in cutting away rocky coasts. Successive stages in the destruction of the island of…

The evolute spiral modern border is a wavelike pattern that mimics the waves of the sea.

Evolute Spiral Modern Border

The evolute spiral modern border is a wavelike pattern that mimics the waves of the sea.

The evolute spiral painting is a wavelike pattern that mimics the waves of the sea. Designed during the Italian Renaissance, it was found in a palace in Italy.

Evolute Spiral Painting

The evolute spiral painting is a wavelike pattern that mimics the waves of the sea. Designed during…

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was used on the borders of antique vessels.

Evolute Spiral Paintings

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was…

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was used on the borders of antique vessels.

Evolute Spiral Paintings

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was…

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was used on the borders of antique vessels.

Evolute Spiral Paintings

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was…

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was used on the borders of antique vessels.

Evolute Spiral Paintings

The evolute spiral paintings is a wave pattern that mimics the wave of the sea. In this design it was…

"A prism is a piece of glass, having for its sides three plane surfaces and for its ends two equal and parallel triangles." —Quackenbos 1859

Prism

"A prism is a piece of glass, having for its sides three plane surfaces and for its ends two equal and…

"Mirror A/B is only half of person C's height. C is able to view his entire body through such a small mirror due to the angle of incidence from D to B to F." —Quackenbos 1859

Angle of Incidence and Reflection

"Mirror A/B is only half of person C's height. C is able to view his entire body through such a small…

An illustration of three sailors waving their hats while walking away with interlocking arms.

Sailors Waving Their Hats while Interlocking Arms

An illustration of three sailors waving their hats while walking away with interlocking arms.

The curve of a sine wave.

Curves of sines

The curve of a sine wave.

"Bow or pluck the string of a sonometer near its end, thus setting it in vibration as a hole. The string will have the appearance of a single spindle as shown, and will sound the lowest tone that it is capable of producing." -Avery 1895

Sound Wave, fundamental frequency

"Bow or pluck the string of a sonometer near its end, thus setting it in vibration as a hole. The string…

"Lightly touch the wire at its middle point with the tip of the finger or the beard of a quill; the wire will vibrate in halves." -Avery 1895

Sound Wave

"Lightly touch the wire at its middle point with the tip of the finger or the beard of a quill; the…

The evolute spiral stove tile is a painting during the German Renaissance. It is a wavelike pattern that mimics the waves of the sea. The interstices (small opening) between the lines is decorated with leaves and flower buds.

Evolute Spiral Stove Tile

The evolute spiral stove tile is a painting during the German Renaissance. It is a wavelike pattern…

The evolute spiral trellis (garden frame) is made out of wrought iron. It is a wavelike pattern that mimics the waves of the sea.

Evolute Spiral Trellis

The evolute spiral trellis (garden frame) is made out of wrought iron. It is a wavelike pattern that…

Diagram showing the development of the breaking wave and the "swash" after breaking.

Breaking Wave Diagram

Diagram showing the development of the breaking wave and the "swash" after breaking.

"Tie one end of a soft cotton rope about 20 feet long to a fixed support, and hold the other end in the hand. Move the hand up and down with a quick, sudden motion, so as to set up a series of waves in the rope, as shown, in which each curved line may be considered an instantaneous photograph of a rope thus shaken." -Avery 1895

Form of Waves

"Tie one end of a soft cotton rope about 20 feet long to a fixed support, and hold the other end in…

"...represents two wave systems of equal periods and amplitudes but of opposite phases." -Avery 1895

Waves with Equal Periods and Opposite Amplitudes

"...represents two wave systems of equal periods and amplitudes but of opposite phases." -Avery 1895

An illustration of a woman waving a handkerchief over the deck of a ship.

Woman Waiving Handkerchief

An illustration of a woman waving a handkerchief over the deck of a ship.