Sentences with phrase «silver iodide»

That material is then burned, sending smoke filled with silver iodide particles up into the cloud.

In the 1940s, atmospheric scientist Bernard Vonnegut found that particles of silver iodide can cause supercool clouds of water vapor to freeze into snow in the lab.

A second innovation deploys synthesizing apatite minerals from silver iodide particles.

Cloud seeding stimulates snowfall by releasing silver iodide into clouds from the air or from ground - based generators.

To seed a cloud, material is burned to release silver iodide.

Its effort, called Project StormFury, aimed to weaken hurricanes by seeding their upper reaches with silver iodide crystals, nucleating agents that would increase the amount of ice swirling around in the storm.

Cloud seeding puts chemicals, usually silver iodide, into clouds to condense their moisture into ice, which falls down as snow or rain.

With silver iodide began the birth of spraying stratospheric aerosols into the Earth's atmosphere.

It launched one aircraft that made laps between two ground - based radars, dropping canisters that spread silver iodide into the clouds.

Particles like silver iodide can provide a scaffold on which water molecules can align themselves into a crystalline structure or, in other words, freeze.

The same plane also flew through the cloud while streaming silver iodide from its wings.

When wind, temperature, and humidity are just right, the company calls local residents, who are paid a fee to go out and turn on a cloud - seeding unit, sending a plume of silver iodide downwind.

Since silver iodide has a crystalline structure similar to that of ice, it allows the tiny water droplets to coalesce until they are big and heavy enough to fall out of the sky, ultimately increasing snowfall between 10 and 15 percent a year.

Vonnegut went on to invent what amounted to a nucleating machine: He dissolved silver iodide in acetone, sprayed the solution through a nozzle to make droplets, and then literally burned the droplets, producing trillions of nuclei; under the right conditions, each could form the core of a drop of water or flake of snow.

The box sits atop a tank of gaseous silver iodide that, when fired up, sends a plume downwind toward the nearby Oquirrh Mountains.

Another, called silver iodide, is used for developing photographs.

(64) These included colloidal silver iodide containing 18 - 22 percent silver (diluted to 0.05 - 10 percent silver for local use) and strong silver protein containing 7.5 - 8.5 percent silver (diluted to 0.5 - 10 percent).

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Aren't most of the modern cloud - seeding experiments (e.g., North Dakota, Iowa, West Texas, Israel, China) using silver iodide rather than a sulfite?

Shortly after this it was discovered that fine particles of pure silver iodide with a crystal structure similar to that of ice were effective for global weather modification.

Silver iodide spraying began in the 1950's (1), you can learn a bit more about it here.

Cloud seeding puts chemicals, usually silver iodide, into clouds to condense their moisture into ice, which falls down as snow or rain.

At room temperature iodine sublimates out of the flakes, rising in a vapor that reacts with the pure silver on the plate, creating an extremely fine layer of silver iodide — a photosensitive halide.

Believing the theory, 37,000 Chinese peasants shot rockets filled with silver iodide (a widely used seeding agent) into clouds.

Some of the mosaic tiles — like projects to desalinate ocean water, pipelines to move water west from the Mississippi River or seeding rain clouds with silver iodide — stretch technological limits and call for innovation.

In the SNOWIE project, an aircraft supported by the Idaho Power Company released the silver iodide, while the UW King Air took measurements to monitor the silver iodide's impact.

Within these lines, the cloud's water particles were getting bigger as they hit the silver iodide and froze.

Without knowing how a cloud evolves after seeding, scientists were unsure whether the silver iodide was doing anything at all.

Controlling the weather has been an elusive goal throughout history: The Maya of Chichén Itzá in Mexico sacrificed humans to their rain god, Chac, and during the Vietnam War, the U.S. military seeded monsoon clouds with silver iodide to trigger torrential downpours.

Once those silver iodide particles make their way into a ripe cloud, they collide with drops of supercooled water and form ice; the ice then falls to the ground, melting along the way.

Seeding the Sky The most widely used weather - modification technique is probably cloud seeding, which involves priming clouds with particles of silver iodide.

By lacing clouds with silver iodide, the military hoped to extend the monsoon season and increase the amount of mud along the paths and roads of the Ho Chi Minh Trail, restricting enemy movement.

The whole contraption is hooked to a tank of propane to provide the flame and warmth that lifts the silver iodide into the atmosphere.»

In reality, cloud seeding is pretty low tech: A tank of silver iodide is topped by a burner and surrounded by a perforated - metal wind arrester.

For more than 30 years, the state of North Dakota has been seeding clouds with silver iodide both to abate the hail and to create rain.

Once carried up on the wind, each silver iodide crystal forms a core, or nucleus, around which water droplets collect.

For the Olympics, the world's largest weather modification bureau will set up several banks of rocket launchers outside the city to blast threatening clouds with silver iodide and force them to release their rain before it reaches the Olympic stadium.

Then they added particles of silver iodide, which boosted the fabric's self - cleaning ability in the sun.

Other studies have demonstrated that silver iodide can speed up chemical reactions in sunlight.

silver iodide A yellow powder that darkens with exposure to light.

These include silver sulfadiazine, silver nitrate, silver citrate, silver iodide, silver chloride, silver lactate, silver oxide and silver picrate.

If impurities are present in the water used in the manufacture of Colloidal Silver many silver compounds may be formed such as Silver Chloride, Silver Fluoride, Silver Bromide, Silver Iodide, etc..

Typically, silver iodide or dry ice, is used to increase precipitation in areas experiencing drought and to reduce the amount of fog or precipitation at sensitive times or locations.

In a process called cloud seeding, silver iodide, with effective ice - nucleating temperatures of less than − 4 °C, has been used for years in attempts to convert supercooled water to ice crystals in regions with a scarcity of natural ice nuclei.

In the process of cloud - seeding or weather modification, silver iodide, potassium iodide, or solid carbon dioxide is shot into clouds by rockets, sprayed into clouds by drones or aircraft, or burned in generators atop mountains.