The World's Largest Public Domain Media Search Engine

propagation

public
22 media by topicpage 1 of 1
Pulsed Ejector Test, NASA Glenn Research Center

Pulsed Ejector Test, NASA Glenn Research Center

A researcher stands next to the Pulsed Ejector Wave Propagation Test Rig in an opened section of the 1'x1' Supersonic Wind Tunnel at NASA Glenn Research Center.

A close up of a bunch of dried flowers. Plant seed propagation.

A close up of a bunch of dried flowers. Plant seed propagation.

A close up of a dried flower / A close up of a plant with many small seeds public domain stock photo.

The Propagation Society. More free than welcome

The Propagation Society. More free than welcome

An anti-Catholic cartoon, reflecting the nativist perception of the threat posed by the Roman Church's influence in the United States through Irish immigration and Catholic education. The "Propagation Society" ... More

RF, Radio Frequency, Propagation Studies GRC-2013-C-05124

RF, Radio Frequency, Propagation Studies GRC-2013-C-05124

RF, Radio Frequency, Propagation Studies Public domain photograph related to NASA research activity, space exploration, free to use, no copyright restrictions image - Picryl description

The first of [...] M.S. Eisenhower, Director of Information, U.S. Department of Agriculture, finds the first publication ever issued by the Department to be interesting reading matter. This booklet, recently discovered in one of the Department libraries, was issued in 1861. It was a report on plants in the U.S. Propagation Gardens and was written by William Saunders. In the last fiscal year the Department sent out over 11,000,000 farmers' bulletins, 11/24/30

The first of [...] M.S. Eisenhower, Director of Information, U.S. Depa...

Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description

Photograph of One-Fourth Acre Game Food Patch in the Vesuvius Game Propagation Area

Photograph of One-Fourth Acre Game Food Patch in the Vesuvius Game Pro...

Original caption: 1/4 acre game food patch (millet and soybean mixture) in the Vesuvius Game propagation Area established in cooperation with the Ohio Division of Con and Natural Resources. Combination of a dry... More

The Propagation Society. More free than welcome

The Propagation Society. More free than welcome

An anti-Catholic cartoon, reflecting the nativist perception of the threat posed by the Roman Church's influence in the United States through Irish immigration and Catholic education. The "Propagation Society" ... More

FLAME PROPAGATION EXPERIMENT PACKAGE, NASA Technology Images

FLAME PROPAGATION EXPERIMENT PACKAGE, NASA Technology Images

The original finding aid described this as: Capture Date: 11/11/1977 Photographer: DONALD HUEBLER Keywords: Larsen Scan Location Building No: 45 Photographs Relating to Agency Activities, Facilities and Personnel

Giant sequoias cloned from the Muir Sequoia

Giant sequoias cloned from the Muir Sequoia

Young giant sequoias cloned from the Muir Sequoia

A close up of a fly on a wall. Fly mate insects.

A close up of a fly on a wall. Fly mate insects.

A close up of a fly on a wall / A close up of a fly on a wall / Animals public domain photography.

FLAME PROPAGATION EXPERIMENT PACKAGE, NASA Technology Images

FLAME PROPAGATION EXPERIMENT PACKAGE, NASA Technology Images

The original finding aid described this as: Capture Date: 11/11/1977 Photographer: DONALD HUEBLER Keywords: Larsen Scan Location Building No: 45 Photographs Relating to Agency Activities, Facilities and Personnel

A bee on a pink flower with green leaves. Bumblebee bug pollen.

A bee on a pink flower with green leaves. Bumblebee bug pollen.

A bee and a bee on a pink flower / A pink flower with a bee on it public domain stock photo.

SENIOR laboratory technician Dale Opela looks through the optical measuring microscope of a crack propagation device. The technician works in the Tower Facility in the Avionics Laboratory, Air Force Wright Aeronautical Laboratory, Air Force Systems Command

SENIOR laboratory technician Dale Opela looks through the optical meas...

The original finding aid described this photograph as: Base: Wright-Patterson Air Force Base State: Ohio (OH) Country: United States Of America (USA) Scene Camera Operator: Unknown Release Status: Released... More

PULSED EJECTOR WAVE PROPAGATION TEST RIG GRC-2001-C-00705

PULSED EJECTOR WAVE PROPAGATION TEST RIG GRC-2001-C-00705

PULSED EJECTOR WAVE PROPAGATION TEST RIG

A group of onions laying on the ground. Bulbs daffodil root.

A group of onions laying on the ground. Bulbs daffodil root.

Daffodils flowers. Free images of daffodils. Use free photos of flowers without any copyright restrictions.

A close up of a plant with leaves. Nature plant honesty.

A close up of a plant with leaves. Nature plant honesty.

The leaves of a plant are white / A close up of a plant with leaves / Public domain close up photo of a leaf.

Salinas, California. Intercontinental Rubber Producers. A sack of seed from selected guayule plants. This selected seed will be used for experimental work in seed propagation to raise shrubs for maximum production

Salinas, California. Intercontinental Rubber Producers. A sack of seed...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description

Buildings and utilities, Ash Mountain Nursery.  Sequoia propagation. Ford Spieglemyre, Chief Ranger in background.

Buildings and utilities, Ash Mountain Nursery. Sequoia propagation. F...

SEKI Historic Image Public domain photograph of a nursery, agriculture, garden, free to use, no copyright restrictions image - Picryl description

A close up of a fly on a concrete surface. Fly mate insects.

A close up of a fly on a concrete surface. Fly mate insects.

Two fly on the ground, one on the other / Two flies on a gray floor - public domain aircraft photo. Two fly on the ground, one on the other / Two flies on a gray floor - public domain insect photo.

SALMON PROPAGATION TREATY. SIGNED 9/2/1919, BUT NOT RATIFIED. ROLAND LINDSEY, CHARGE BRITISH EMBASSY; DOUGLAS HAZEN, CANADA; W.A. FUND

SALMON PROPAGATION TREATY. SIGNED 9/2/1919, BUT NOT RATIFIED. ROLAND L...

A black and white photo of three men in suits. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description

Micropropagation at Archangel Ancient Tree Archive

Micropropagation at Archangel Ancient Tree Archive

Giant sequoias cloned from the Muir Sequoia

Salinas, California. Intercontinental Rubber Producers. Guayule seedlings in nursery to be used in seed propagation tests

Salinas, California. Intercontinental Rubber Producers. Guayule seedli...

Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description