Gray Converter
Convert Gray to Petagray Second 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.
Petagray SecondPg·s
Target UnitThe petagray second (Pg·s) is a unit of radiation dose that combines the gray, a unit of absorbed radiation dose, with time in seconds. Specifically, one petagray second is equal to one petagray (10^15 gray) of radiation absorbed in one second. This unit is particularly useful in fields such as radiation therapy and nuclear physics where high levels of radiation exposure are assessed over time. It allows for a comprehensive understanding of both the intensity and duration of radiation exposure, essential for safety and efficacy in medical treatments and research.
Current Use
The petagray second is predominantly used in medical physics, radiation therapy, and nuclear research. It serves as a crucial unit for dosimetry, particularly in settings where patients are exposed to high radiation doses over specific time intervals. It helps in determining the safety and effectiveness of treatments and in assessing risks in occupational exposure scenarios. This unit is also relevant in the context of radiological emergency response and safety regulations.
Fun Fact
The petagray second is significantly larger than everyday radiation units, requiring specialized equipment to measure accurately.
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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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Petagray Second
radiation • Non-SI
Definition
The petagray second (Pg·s) is a unit of radiation dose that combines the gray, a unit of absorbed radiation dose, with time in seconds. Specifically, one petagray second is equal to one petagray (10^15 gray) of radiation absorbed in one second. This unit is particularly useful in fields such as radiation therapy and nuclear physics where high levels of radiation exposure are assessed over time. It allows for a comprehensive understanding of both the intensity and duration of radiation exposure, essential for safety and efficacy in medical treatments and research.
History & Origin
The petagray second originated from the need to quantify large doses of radiation in a practical manner, particularly for industries and medical sectors dealing with high-energy radiation. The gray itself was adopted as a standard unit in 1975 by the International System of Units (SI) and represents the absorption of one joule of radiation energy per kilogram of matter. The prefix 'peta-' signifies a factor of 10^15, allowing the expression of very large doses compactly.
Etymology: The term 'petagray' derives from the SI unit 'gray,' named in honor of the British scientist Louis Harold Gray, who contributed significantly to the field of radiobiology. The prefix 'peta-' comes from the Greek word 'penta,' meaning five, signifying a quintillion or 10^15.
Current Use
The petagray second is predominantly used in medical physics, radiation therapy, and nuclear research. It serves as a crucial unit for dosimetry, particularly in settings where patients are exposed to high radiation doses over specific time intervals. It helps in determining the safety and effectiveness of treatments and in assessing risks in occupational exposure scenarios. This unit is also relevant in the context of radiological emergency response and safety regulations.
💡 Fun Facts
- •The petagray second is significantly larger than everyday radiation units, requiring specialized equipment to measure accurately.
- •In radiation therapy, precise dosing is critical; even minor deviations can impact treatment outcomes.
- •The prefix 'peta-' is often associated with data storage (petabyte) but also applies to radiation measurements.
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