Gray Converter
Convert Gray to Coulomb Kilogram and more • 73 conversions
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Unit Explanations
GrayGy
Source UnitThe gray (Gy) is the SI derived unit of absorbed dose of ionizing radiation, defined as the absorption of one joule of radiation energy by one kilogram of matter. It quantifies the amount of energy deposited by radiation in a specified mass of material, which in biological contexts is often human tissue. The gray is crucial in assessing radiation exposure and its potential biological effects, and it serves as a fundamental unit in radiation safety and protection protocols.
Current Use
The gray is widely used in medical fields, particularly in radiation therapy for cancer treatment, where precise dosages are critical for effective treatment while minimizing damage to surrounding healthy tissue. It is also employed in radiological assessments, nuclear power, and safety protocols for radiation workers. Various international organizations, including the International Atomic Energy Agency (IAEA), utilize the gray for consistent communication regarding radiation exposure levels.
Fun Fact
The gray is equivalent to 100 rad, an older unit of absorbed dose.
Coulomb KilogramC·kg
Target UnitThe coulomb kilogram (C·kg) is a derived unit that combines the unit of electric charge, the coulomb, with the unit of mass, the kilogram. It is used in the context of electromagnetic systems where both charge and mass are relevant. One coulomb is defined as the amount of electric charge transported by a constant current of one ampere in one second, while one kilogram is the SI base unit of mass. The combination of these units indicates a system's interaction involving both charge and mass properties.
Current Use
The coulomb kilogram is used in advanced physics and engineering contexts, particularly in studies involving particle physics, radiation measurement, and electromagnetic fields. Researchers and engineers utilize this unit to quantify the interactions between charged particles and their masses, which is crucial in fields such as nuclear energy, astrophysics, and medical imaging technologies. It is also relevant in the calibration of instruments that measure radiation and charged particle behavior.
Fun Fact
The coulomb is named after Charles-Augustin de Coulomb, who formulated Coulomb's law, fundamental in electrostatics.
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= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Gray
radiation • SI Unit
Definition
The gray (Gy) is the SI derived unit of absorbed dose of ionizing radiation, defined as the absorption of one joule of radiation energy by one kilogram of matter. It quantifies the amount of energy deposited by radiation in a specified mass of material, which in biological contexts is often human tissue. The gray is crucial in assessing radiation exposure and its potential biological effects, and it serves as a fundamental unit in radiation safety and protection protocols.
History & Origin
The gray was introduced in 1975 by the International System of Units (SI) as the unit of absorbed dose to provide a standardized measurement for radiation exposure. Its creation was a response to the need for a unified system that could facilitate consistency in scientific research and practical applications in radiology, nuclear medicine, and radiation therapy.
Etymology: The unit is named after the British physicist Louis Harold Gray, who made significant contributions to the field of radiation therapy and the study of radiation's effects on biological tissue.
Current Use
The gray is widely used in medical fields, particularly in radiation therapy for cancer treatment, where precise dosages are critical for effective treatment while minimizing damage to surrounding healthy tissue. It is also employed in radiological assessments, nuclear power, and safety protocols for radiation workers. Various international organizations, including the International Atomic Energy Agency (IAEA), utilize the gray for consistent communication regarding radiation exposure levels.
💡 Fun Facts
- •The gray is equivalent to 100 rad, an older unit of absorbed dose.
- •The gray is used in radiation therapy to ensure that the cancerous tissue receives a lethal dose while surrounding healthy tissue receives a much lower dose.
- •Louis Harold Gray was the first scientist to quantify the effects of radiation on living tissue, leading to advancements in cancer treatment.
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Coulomb Kilogram
radiation • Non-SI
Definition
The coulomb kilogram (C·kg) is a derived unit that combines the unit of electric charge, the coulomb, with the unit of mass, the kilogram. It is used in the context of electromagnetic systems where both charge and mass are relevant. One coulomb is defined as the amount of electric charge transported by a constant current of one ampere in one second, while one kilogram is the SI base unit of mass. The combination of these units indicates a system's interaction involving both charge and mass properties.
History & Origin
The concept of electric charge was first introduced by Charles-Augustin de Coulomb in the 18th century through his work on electrostatics. In 1881, the coulomb was officially defined in terms of the ampere, another fundamental unit of electric current. The kilogram, as a unit of mass, was defined much earlier in the late 18th century as part of the metric system. The combination of these units into the coulomb kilogram emerged as scientific understanding of electromagnetism evolved, especially with the advent of technologies requiring precise measurements of charge and mass.
Etymology: The term 'coulomb' is derived from the name of the French physicist Charles-Augustin de Coulomb, while 'kilogram' comes from the Greek word 'kilo,' meaning one thousand, combined with 'gram,' which originates from the Latin 'gramma,' meaning a small weight.
Current Use
The coulomb kilogram is used in advanced physics and engineering contexts, particularly in studies involving particle physics, radiation measurement, and electromagnetic fields. Researchers and engineers utilize this unit to quantify the interactions between charged particles and their masses, which is crucial in fields such as nuclear energy, astrophysics, and medical imaging technologies. It is also relevant in the calibration of instruments that measure radiation and charged particle behavior.
💡 Fun Facts
- •The coulomb is named after Charles-Augustin de Coulomb, who formulated Coulomb's law, fundamental in electrostatics.
- •One coulomb represents a substantial amount of charge; a typical lightning bolt carries about 15 coulombs.
- •The kilogram was originally defined as the mass of a liter of water at its maximum density.
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