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Chemical compound
Silver iodide is an inorganic compound with the formula AgI. The compound is a bright yellow salt, but samples almost always contain impurities of metallic
Silver_iodide
Ion, and compounds containing the ion
solubility of silver iodide and lead iodide reflects the covalent character of these metal iodides. A test for the presence of iodide ions is the formation
Iodide
Ionic compound (KI)
Potassium iodide (KI) is a chemical compound, medication, and dietary supplement. It is a medication used for treating hyperthyroidism, in radiation emergencies
Potassium_iodide
Weather modification that condenses clouds to cause rainfall
as cloud condensation or ice nuclei. Common agents include silver iodide, potassium iodide, and dry ice, with hygroscopic materials like table salt gaining
Cloud_seeding
Silver-based salt used in photographic film and traditional photographic paper
may each combine with silver to produce silver bromide (AgBr), silver chloride (AgCl), silver iodide (AgI), and four forms of silver fluoride, respectively
Silver_halide
American meteorologist and inventor
proposal employed ground-based smoke generators dispersing vaporized silver iodide. A single smoke dispenser set, asserted Krick, could be moved by two
Irving_P._Krick
Chemical compound
Rubidium silver iodide is a ternary inorganic compound with the formula RbAg4I5. Its conductivity involves the movement of silver ions within the crystal
Rubidium_silver_iodide
Early photographic process
introduced in 1841 by William Henry Fox Talbot, using paper coated with silver iodide. Paper texture effects in calotype photography limit the ability of
Calotype
Act of intentionally altering or manipulating the weather
precipitation. Cloud seeding entails spraying small particles, such as silver iodide, onto clouds to attempt to affect their development, usually with the
Weather_modification
NOAA weather modification program
them with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause
Project_Stormfury
Chemical compound with the formula AgCl
iodide, as well as a variety of ligands (see silver halide). For AgBr and AgI, the Ksp values are 5.2 × 10−13 and 8.3 × 10−17, respectively. Silver bromide
Silver_chloride
Solid conductor with highly mobile ions
Similar behavior is observed for copper(I) iodide (CuI), rubidium silver iodide (RbAg4I5), and Ag2HgI4. Silver sulfide, conductive for Ag+ ions, used in
Fast-ion_conductor
Chemical element with atomic number 47 (Ag)
hypochlorite treatments do, colloidal silver is not effective enough for more contaminated open swimming pools. Small silver iodide crystals are used in cloud seeding
Silver
test tube saturated with silver nitrate. Any alkyl iodide present will give a reaction with the silver compound to silver iodide which has a red or yellow
Zeisel_determination
2024 film by Lee Isaac Chung
change in the experiment to correct a previous oversight, namely adding silver iodide. The team tracks another tornado developing near El Reno. Javi and Scott's
Twisters_(film)
American atmospheric scientist, chemist
was an American atmospheric scientist credited with discovering that silver iodide could be used effectively in cloud seeding to produce snow and rain
Bernard_Vonnegut
Chemical element with atomic number 53 (I)
of these elements. Silver iodide is a major ingredient to traditional photographic film. Thousands of kilograms of silver iodide are used annually for
Iodine
Chemical compound
Copper(I) iodide is an inorganic compound with the chemical formula CuI. It is also known as cuprous iodide. It is useful in a variety of applications
Copper(I)_iodide
been fumed with iodine vapor, which reacted with the silver to form a coating of silver iodide. As with the bitumen process, the result appeared as a
History_of_photography
Image created by light falling on a light-sensitive surface
concentrated on silver halide-based alternatives. He exposed a silver-plated copper sheet to iodine vapor, creating a layer of light-sensitive silver iodide; exposed
Photograph
Early photographic technique
meant that silver photographic processes that rely on the reduction of silver iodide, silver bromide and silver chloride to metallic silver became feasible
Daguerreotype
Branch of electrochemistry
Nernst lamp. Another major step forward was the characterization of silver iodide in 1914. Around 1930, the concept of point defects was established by
Solid_state_ionics
Meteorological process around and within the eye of intense tropical cyclones
seeding with silver iodide. The project was run by the United States Government from 1962 to 1983. The hypothesis was that the silver iodide would cause
Eyewall_replacement_cycle
American author (1922–2007)
His brother Bernard had worked at GE since 1945, focusing mainly on a silver-iodide-based cloud seeding project that quickly became a joint GE–U.S. Army
Kurt_Vonnegut
high-contrast and extremely sharp image by exposing on a plate coated with silver iodide, and exposing this plate again to mercury vapor. By 1837, he was able
History_of_the_camera
Act of attempting to artificially induce or increase precipitation
airplanes or rockets to sow to the clouds with catalysts such as dry ice, silver iodide and salt powder, to make clouds rain or to increase precipitation, to
Rainmaking
Early photographic technique
forming silver iodide on the collodion film. However, at the same time, potassium nitrate also formed, from the potassium ions in the iodide and the nitrate
Collodion_process
French scientist, artist and photographer (1787–1851)
exposed a thin silver-plated copper sheet to the vapour given off by iodine crystals, producing a coating of light-sensitive silver iodide on the surface
Louis_Daguerre
Chinese cloud seeding organization
nationwide, who seed clouds by firing rockets and shells loaded with silver iodide into them. According to Zhang Qiang, head of the Office, cloud seeding
Beijing Weather Modification Office
Beijing_Weather_Modification_Office
1950s UK government initiative and the subject of conspiracy theories
Methods that were tested involved releasing pellets of salt, dry ice, or silver iodide into clouds from aircraft or from firing them into clouds from the ground
Project_Cumulus
Crystal growth process relative to the substrate used as seed
epitaxy is the making of artificial snow using silver iodide, which is possible because hexagonal silver iodide and ice have similar cell dimensions. Minerals
Epitaxy
Chemical compound
illustrated by the tungsten complex shown in the figure. Its complex with silver iodide, AgI(PMe3) is an air-stable solid that releases PMe3 upon heating. PMe3
Trimethylphosphine
Iodyrite or iodargyrite is a natural mineral form of silver iodide. Related minerals are chlorargyrite and bromargyrite. Warr, L.N. (2021). "IMA–CNMNC
Iodargyrite
Study of the physical care and treatment of photographic materials
developed the Talbotype, which used silver chloride to sensitize paper. After improving the process by using silver iodide, he renamed it Calotype. The process
Conservation and restoration of photographs
Conservation_and_restoration_of_photographs
Category 2 Atlantic hurricane in 1971
Project Stormfury, which sought to weaken hurricanes by depositing silver iodide into tropical cyclone rainbands. Ginger ultimately struck North Carolina
Hurricane_Ginger
In organic chemistry, the vinyl iodide or iodoalkene functional group occurs when two carbon atoms are double-bonded to each other, and one carbon is bonded
Vinyl_iodide_functional_group
Form of solid precipitation
reduction in crop damage from hail storms was achieved by deploying silver iodide in clouds using rockets and artillery shells. But these effects have
Hail
cloud seeding, the government ordered over 1000 misses filled with silver iodide to surround the city. They were assisted by three aircraft. The goal
2008 Summer Olympics opening ceremony
2008_Summer_Olympics_opening_ceremony
U.S. military cloud-seeding project in Vietnam (1967–1972)
existed. A report titled Rainmaking in SEASIA outlines use of lead iodide and silver iodide deployed by aircraft in a program that was developed in California
Operation_Popeye
Topics referred to by the same term
Gateway Interface, a software interface and communications protocol Silver iodide (formula AgI), an inorganic compound Adjusted gross income, in the US
AGI
Artificial rain-making
particular region. Cloud seeding missions require firing salts and silver iodide crystals into the atmosphere. The increased concentration of particulate
Cloud seeding in the United Arab Emirates
Cloud_seeding_in_the_United_Arab_Emirates
Uncontrolled fire in forests or open spaces
the suppression methods vary due to increased technological capacity. Silver iodide can be used to encourage snow fall, while fire retardants and water
Wildfire
Oscillating chemical reaction
place simultaneously. For example, following the iodide ion concentration with a silver/silver iodide electrode (see § Videos) shows sudden dramatic swings
Briggs–Rauscher_reaction
Solid form of carbon dioxide
experiments in the US in the 1950s and early 1960s before it was replaced by silver iodide. Dry ice has the advantage of being relatively cheap and completely
Dry_ice
Compounds having a fully conjugated cyclic dione structure
containing silver bromide or silver iodide crystals, which exposure to light activates. Hydroquinone is used to reduce the activated silver ions to metallic
Quinone
(May 2025). "Weather Modification Project Reports". NOAA Central Library. Silver Spring, Maryland: U.S. Department of Commerce. Retrieved 24 May 2025. Rainmaker
List of weather modification projects in the United States during 2025
List_of_weather_modification_projects_in_the_United_States_during_2025
Ice crystals that fall as snow
although to what extent is unclear. Artificial nuclei include particles of silver iodide and dry ice, and these are used to stimulate precipitation in cloud
Snowflake
American physicist (1887–1974)
Adsorption of Iodine by Silver Iodide," M.A. thesis, 1922; Frank E. E. Germann and Ralph N. Traxler, "Adsorption of Iodine by Silver Iodide," Journal of the
Frank_Erhart_Emmanuel_Germann
Electronic oscillator circuit
crystals with silver electrodes to vapors of iodine, which causes a slight mass increase on the surface by forming a thin layer of silver iodide; such crystals
Crystal_oscillator
Chemical compounds containing silver
the silver halide gains more and more covalent character, solubility decreases, and the color changes from the white chloride to the yellow iodide as the
Silver_compounds
Network of roads in Vietnam, Laos, and Cambodia used by the Viet Cong from 1959 to 1975
the Steel Tiger and Tiger Hound areas. Clouds were seeded by air with silver iodide smoke and then activated by launching a fuse fired from a flare pistol
Ho_Chi_Minh_trail
Chemical compound
Silver bromide (AgBr), a soft, pale-yellow, water-insoluble salt well known (along with other silver halides) for its unusual sensitivity to light. This
Silver_bromide
First permanent photographic process
to silver plates as a vapor. This led Daguerre to the daguerreotype process, in which mercury fumes brought out the latent image in the silver iodide on
Heliography
Union of crystal groups with related structures and lattices
structure are wurtzite itself (ZnS with up to 8% iron instead of zinc), silver iodide (AgI), zinc oxide (ZnO), cadmium sulfide (CdS), cadmium selenide (CdSe)
Hexagonal_crystal_family
Thai artificial rainmaking project
Crown Property Bureau Royal Project Foundation Sufficiency Economy Silver iodide Weather modification "Father of Royal Rainmaking". Public Relations
Royal_Rainmaking_Project
United States inventor (photo-engraving)
made by exposing a polished silvered copper plate to an iodine vapor, which left a thin coat of light sensitive silver iodide on the copper. The plate was
John_C._Moss
American chemist and meteorologist
assembled researchers to perform numerous experiments using dry ice, silver iodide to convert the supercooled water to ice crystals at ground level. Temperature
Vincent_Schaefer
AgCNO Silver hydroxide – AgOH Silver iodide – AgI Silver nitrate – AgNO3 Silver nitride – Ag3N Silver oxide – Ag2O Silver perchlorate – AgClO4 Silver permanganate
List_of_inorganic_compounds
Chemical element with atomic number 37 (Rb)
optical glasses, and rubidium copper sulfate, Rb2SO4·CuSO4·6H2O. Rubidium silver iodide (RbAg4I5) has the highest room temperature conductivity of any known
Rubidium
Battery with solid electrodes and a solid electrolyte
"Effect of relative humidity on the reaction kinetics in rubidium silver iodide based all-solid-state battery". Electrochimica Acta. 355 136779. doi:10
Solid-state_battery
Photography that reproduces colors
within a single-layer, ultra-fine-grain emulsion made up of silver iodide and/or silver bromide in albumen. In doing so, he successfully seized color
Color_photography
Overview of the history of atmospheric sciences
Project STORMFURY begins its 10-year project of seeding hurricanes with silver iodide, attempting to weaken the cyclones. 1968 – A hurricane database for
Timeline_of_meteorology
Heat wave affecting China
Chongqing at night, and 45 °C in Beibei. On 18 August, it was reported that silver iodide was used to form clouds in Anhui and other provinces. From 24 to 26
2022_China_heat_wave
7775–41–9 AgF2 silver difluoride 7783–95–1 AgI silver iodide 7783–96–2 AgIO3 silver iodate 7783–97–3 AgMnO4 silver permanganate 7783–98–4 AgN3 silver azide 13863–88–2
List of CAS numbers by chemical compound
List_of_CAS_numbers_by_chemical_compound
English photography pioneer (1800–1877)
the use of a different silver salt (silver iodide instead of silver chloride) and a developing agent (gallic acid and silver nitrate) to bring out an
Henry_Fox_Talbot
Was a Cold War-era, 82mm Soviet rocket
developed to distribute cloud seeding chemicals such as potassium or silver iodide. Some were converted into improvised munitions and modified to carry
Alazan_(rocket)
Change in energy from formation of 1 mole of substance
−856.4 Silver Silver bromide Solid AgBr −96.90 Silver chloride Solid AgCl −109.8 Silver iodide Solid AgI −66.19 Silver oxide Solid Ag2O −11.21 Silver sulfide
Standard Gibbs free energy of formation
Standard_Gibbs_free_energy_of_formation
National weather, climate, and astronomy bureau of the Philippines
weaken typhoons by 'seeding' them with various elements, most notably silver iodide, to increase the width of the eye, therefore increasing the diameter
PAGASA
nanosystems based on advanced superionic conductors (e.g. alpha–AgI, rubidium silver iodide–family). Nanoionics-I and nanoionics-II differ from each other in the
Nanoionics
Chemical compound and pharmaceutical drug
diiodide with aqueous silver nitrate gives the diaquo complex [Pt(OH2)2(NH3)2]2+, concomitant with precipitation of silver iodide. Addition of potassium
Cisplatin
Soviet turboprop transport aircraft
of the lower fuselage, which could be substituted for dispensers for silver iodide flares for rainmaking. At least 5 converted. An-26P Prozhektor ("Projector"
Antonov_An-26
Measure of a substance's tendency towards ionic conduction
in ionic solids like lead(II) fluoride (PbF2) and silver sulfide (Ag2S). In 1921, solid silver iodide (AgI) was found to have had extraordinary high ionic
Ionic conductivity (solid state)
Ionic_conductivity_(solid_state)
Photographic process
negatives rather than live subjects. Calotype paper employed silver iodide instead of silver chloride. Calotype was a developing out process, not a printing
Salt_print
Electric-conducting material with near-optimal ion transport
channels at each moment (Ni~1022/cm3, ni~2×1020/cm3, 300 K). The Rubidium silver iodide–family is a group of AdSIC compounds and solid solutions that are isostructural
Advanced_superionic_conductor
Chemical element with atomic number 35 (Br)
bromotrifluoromethane (Halon 1301, CBrF3). Silver bromide is used, either alone or in combination with silver chloride and silver iodide, as the light sensitive constituent
Bromine
Governing body of Olympic sports
Beijing Olympics on most days.[citation needed] Beijing also sprayed silver iodide in the atmosphere to induce rain to remove existing pollutants from
International Olympic Committee
International_Olympic_Committee
Chemical compound
Silver iodate (AgIO3) is a light-sensitive, white crystal composed of silver, iodine and oxygen. Unlike most metal iodates, it is practically insoluble
Silver_iodate
Chemical compounds containing iodine
element, while those of covalent iodides (e.g. silver) are the lowest of that element. In particular, silver iodide is very insoluble in water and its
Iodine_compounds
American chemical engineer (1889–1950)
1920). "A Thermodynamic Investigation of Reactions Involving Silver Sulfide and Silver Iodide". Journal of the American Chemical Society. 42 (3): 476–487
Edgar_Stanley_Freed
Process of ice crystal growth in clouds
Ice nuclei Temperature to freeze Bacteria −2.6 °C (27.3 °F) Kaolinite −30 °C (−22 °F) Silver iodide −10 °C (14 °F) Vaterite −9 °C (16 °F)
Wegener–Bergeron–Findeisen process
Wegener–Bergeron–Findeisen_process
weaken tropical cyclones by flying aircraft into them and seeding with silver iodide. The project was run by the United States Government from 1962 to 1983
Weather modification in North America
Weather_modification_in_North_America
Mexican politician (born 1987)
shortages lasting several weeks. García started cloud seeding with silver iodide in order to increase the chances of rainfall over the state's main reservoirs
Samuel_García_(politician)
Canadian pilot and political adviser (born 1937)
in the area around Calgary, Alberta, using four Harvards to disperse silver iodide into the atmosphere in an attempt to reduce hail damage. For several
Lynn_Garrison
American meteorologist (born 1937)
director in Project Storm Fury, an attempt to modify hurricanes with silver iodide. Since retiring in 1995, Sheets has continued his relationship with
Bob_Sheets
American meteorologist (1914–1999)
Massachusetts Institute of Technology, focusing on cloud physics and the use of silver iodide and dry ice in cloud seeding. Over his career, Howell conducted cloud
Wallace_E._Howell
American chemist and physicist (1881–1957)
in the atmosphere, that the introduction of ice nuclei dry ice and silver iodide into a sufficiently moist cloud of low temperature (supercooled water)
Irving_Langmuir
to weaken hurricanes by depositing silver iodide into tropical cyclone rainbands. The plane dropped silver iodide into the center of Ginger, although
1971 Atlantic hurricane season
1971_Atlantic_hurricane_season
Category 2 hurricane for the next few days, possibly due to being seeded by silver iodide as part of Project Stormfury, though reanalysis suggested that an eyewall
1969 Atlantic hurricane season
1969_Atlantic_hurricane_season
Study of the physical processes in atmospheric clouds
carbonaceous particles, and volcanic ash. Man-made particles, such as silver iodide and Pseudomonas syringae, are also known to be effective ice-nucleating
Cloud_physics
Small particles on which water vapor condenses
Chessin, Henry (26 November 1971). "Ice Nucleation by Coprecipitated Silver Iodide and Silver Bromide". Science. 174 (4012): 945–946. Bibcode:1971Sci...174.
Cloud_condensation_nuclei
Aspect of Japan's military history
tropical locations. A report titled Rainmaking in SEASIA outlines use of silver iodide deployed by aircraft in a program that was developed in California at
Japan and weapons of mass destruction
Japan_and_weapons_of_mass_destruction
Pacific tropical storm in 2003
included the deployment of 1,027 rockets and 14,700 cannonballs containing silver iodide. As a result of these, rainfall totals ranging from 40–60 mm (1.6–2
Tropical_Storm_Morakot_(2003)
United States historic place
Willis Rodney Whitney, chemist Bernard Vonnegut, chemist, discoverer of silver iodide cloud seeding Kurt Vonnegut, writer Christopher J. Hardy, physicist
General Electric Research Laboratory
General_Electric_Research_Laboratory
Precipitation in the form of ice crystal flakes
biological particles can be nuclei. Artificial nuclei include particles of silver iodide and dry ice, and these are used to stimulate precipitation in cloud
Snow
AgCN silver cyanide 506–64–9 AgCNO silver fulminate 5610–59–3 AgF silver fluoride 7775–41–9 AgF2 silver(II) fluoride 7783–95–1 AgI silver iodide 7783–96–2
Glossary_of_chemical_formulae
Organic derivative of iodine
Meyer-Hartmann reaction applies: a silver alkoxide reacts with elemental iodine to give the hypoiodite and silver iodide. They are unstable to visible light
Hypervalent organoiodine compounds
Hypervalent_organoiodine_compounds
Category 3 Atlantic hurricane in 1954
determine their structure, as well as attempted to weaken storms with silver iodide via Project Stormfury. Due to the heavy damage, the name Carol was removed
Hurricane_Carol
Month of 1961
attempted a weather control experiment by dropping eight canisters of silver iodide around the eyewall of Hurricane Esther, testing the hypothesis that
September_1961
Day of the year
States National Hurricane Research Project drops eight cylinders of silver iodide into the eyewall of Hurricane Esther. Wind speed reduces by 10%, giving
September_16
Chemical compound
for the laboratory-scale synthesis of many silver compounds. These include the dark brown oxide, yellow iodide, pale yellow bromide, and white chloride
Silver_nitrate
SILVER IODIDE
SILVER IODIDE
Surname or Lastname
English (Leicestershire)
English (Leicestershire) : variant of Culver.
Female
English
 Feminine form of Roman Latin Silvius, SILVIA means "from the forest." Compare with another form of Silvia.
Girl/Female
Indian
Silvery, Made of silver
Surname or Lastname
English and Jewish (eastern Ashkenazic)
English and Jewish (eastern Ashkenazic) : occupational name from Old French serveur (an agent derivative of server ‘to serve’), Yiddish sarver ‘servant’.
Girl/Female
Christian & English(British/American/Australian)
White
Girl/Female
American, Anglo, Australian, British, English, Swedish
A Metal Element; White; The Color Silver; Silver
Surname or Lastname
English
English : from Middle English silver ‘silver’, hence a nickname for a rich man or for someone with silvery gray hair, or a metonymic occupational name for a silversmith.English : topographic name from any of the various streams in different parts of England named with this word, probably from the silvery appearance of the water.Translation of German and Ashkenazic Jewish Silber.
Male
Romanian
Romanian form of Roman Latin Silvius, SILVIU means "from the forest."
Girl/Female
Anglo Saxon
White.
Female
Italian
 Feminine form of Italian Silvio, SILVIA means "from the forest." Compare with another form of Silvia.
Surname or Lastname
English
English : patronymic from Silver.
Girl/Female
Arabic, Australian, Iranian, Muslim, Parsi, Zoroastrian
White; Silvery; Made of Silver
Boy/Male
Italian American
Silver.
Surname or Lastname
English
English : variant spelling of Saylor.German : variant of Seiler.
Girl/Female
Latin American Shakespearean
From the forest. Rhea Silvia was the mother of Rome's founders, Remus and Romulus.
Male
English
English form of French Olivier, probably OLIVER means "elf army."
Male
English
English unisex name SILVER means "silver," which may refer to either the precious metal or the color.
Boy/Male
American, Australian, French, German, Latin, Portuguese, Swiss
Wood; Silver; Wood Dweller; From the Forest; From the Wood
Surname or Lastname
English
English : unexplained; perhaps a metronymic from the female personal name Silvia.Possibly a variant spelling of French Silvy : from the personal name Silvy (Latin Silvius; compare Silvio).
Girl/Female
Muslim
Silvery, Made of silver
SILVER IODIDE
SILVER IODIDE
SILVER IODIDE
SILVER IODIDE
SILVER IODIDE
SILVER IODIDE
SILVER IODIDE