Gray Converter
Convert Gray to Watt 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.
Watt KilogramW/kg
Target UnitThe watt per kilogram (W/kg) is a derived unit of power-to-mass ratio in the International System of Units (SI). It quantifies how much power, measured in watts, is produced or consumed per kilogram of mass. This unit is particularly significant in fields such as physics and engineering, where it is essential to understand the efficiency and performance of energy systems in relation to their mass. The formula for calculating power-to-mass ratio is given by: W/kg = P/m, where P is the power in watts and m is the mass in kilograms.
Current Use
The watt per kilogram is commonly used in various industries including aerospace, automotive, and electrical engineering. It serves as a key metric for evaluating the performance of engines, motors, and energy systems, especially in contexts where weight is a critical factor, such as in aircraft design and electric vehicles. Engineers and designers utilize this measurement to optimize performance while minimizing mass, ensuring that systems operate efficiently and effectively.
Fun Fact
The watt was originally defined as the power required to lift 550 pounds one foot in one second.
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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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💡 Pro Tip: For the reverse conversion ( → ), divide by the conversion factor instead of multiplying.
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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Watt Kilogram
radiation • Non-SI
Definition
The watt per kilogram (W/kg) is a derived unit of power-to-mass ratio in the International System of Units (SI). It quantifies how much power, measured in watts, is produced or consumed per kilogram of mass. This unit is particularly significant in fields such as physics and engineering, where it is essential to understand the efficiency and performance of energy systems in relation to their mass. The formula for calculating power-to-mass ratio is given by: W/kg = P/m, where P is the power in watts and m is the mass in kilograms.
History & Origin
The watt per kilogram originated from the need to relate power and mass in various scientific and engineering disciplines. The watt itself was named after James Watt, an 18th-century Scottish inventor known for his work on the steam engine. The introduction of the watt as a unit of power in the late 19th century led to the subsequent derivation of the watt per kilogram to express energy efficiency relative to mass.
Etymology: The term 'watt' is derived from the name of James Watt, while 'kilogram' comes from the Greek word 'kilo,' meaning thousand, and 'gramma,' meaning small weight.
Current Use
The watt per kilogram is commonly used in various industries including aerospace, automotive, and electrical engineering. It serves as a key metric for evaluating the performance of engines, motors, and energy systems, especially in contexts where weight is a critical factor, such as in aircraft design and electric vehicles. Engineers and designers utilize this measurement to optimize performance while minimizing mass, ensuring that systems operate efficiently and effectively.
💡 Fun Facts
- •The watt was originally defined as the power required to lift 550 pounds one foot in one second.
- •In the context of fitness, the watt per kilogram is often used to measure cycling performance, helping athletes optimize their training.
- •The term 'horsepower' was historically used before the watt became common, with one horsepower being equivalent to approximately 746 watts.
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Frequently Asked Questions
How do I convert to ?▼
To convert to , multiply your value by 1. For example, 10 equals 10 .
What is the formula for to conversion?▼
The formula is: = × 1. This conversion factor is based on international standards.
Is this to converter accurate?▼
Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.
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Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.