Gray Converter
Convert Gray to Sievert 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.
Sievert SecondSv·s
Target UnitThe sievert second (Sv·s) is a derived unit in the International System of Units (SI) that quantifies the biological effect of ionizing radiation on human tissue, integrated over a period of time. It combines the sievert, which measures the biological effect of radiation, with time in seconds, providing a temporal aspect to radiation exposure. The sievert accounts for the type of radiation and its impact on different tissues, making Sv·s essential for assessing the risk associated with prolonged exposure to radiation sources.
Current Use
The sievert second is utilized in various industries, particularly in medical and health physics, to assess the risk of radiation exposure over time. In hospitals, Sv·s is used to evaluate the cumulative radiation dose delivered to patients during diagnostic imaging or radiotherapy. Regulatory agencies and research institutions also apply this unit to ascertain safety standards for workers in environments like nuclear power plants, ensuring that exposure levels remain within acceptable limits to protect human health.
Fun Fact
The sievert is named after Rolf Sievert, who was a pioneer in the field of radiation dosimetry, and his work significantly impacted safety standards in radiology.
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📐Conversion Formula
= × 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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Sievert Second
radiation • Non-SI
Definition
The sievert second (Sv·s) is a derived unit in the International System of Units (SI) that quantifies the biological effect of ionizing radiation on human tissue, integrated over a period of time. It combines the sievert, which measures the biological effect of radiation, with time in seconds, providing a temporal aspect to radiation exposure. The sievert accounts for the type of radiation and its impact on different tissues, making Sv·s essential for assessing the risk associated with prolonged exposure to radiation sources.
History & Origin
The sievert was named in honor of the Swedish medical physicist Rolf Sievert, who made significant contributions to radiation dosimetry and the understanding of health risks associated with ionizing radiation. The unit was officially adopted in 1986 by the International System of Units and has since been used in various scientific and medical contexts to assess radiation exposure. The incorporation of time into the sievert, forming the sievert second, allows for a more comprehensive understanding of radiation exposure over intervals, which is crucial in fields like radiology and nuclear medicine.
Etymology: The term 'sievert' is derived from the last name of Rolf Sievert, recognizing his pioneering work in radiation dosimetry.
Current Use
The sievert second is utilized in various industries, particularly in medical and health physics, to assess the risk of radiation exposure over time. In hospitals, Sv·s is used to evaluate the cumulative radiation dose delivered to patients during diagnostic imaging or radiotherapy. Regulatory agencies and research institutions also apply this unit to ascertain safety standards for workers in environments like nuclear power plants, ensuring that exposure levels remain within acceptable limits to protect human health.
💡 Fun Facts
- •The sievert is named after Rolf Sievert, who was a pioneer in the field of radiation dosimetry, and his work significantly impacted safety standards in radiology.
- •One sievert is an extremely high dose of radiation, equivalent to the approximate lethal dose of radiation for a human, which highlights the importance of using this unit carefully.
- •The concept of 'quality factor' is crucial in determining sievert values as it accounts for the biological impact of different types of radiation.
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Frequently Asked Questions
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To convert to , multiply your value by 1. For example, 10 equals 10 .
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