ultraviolet radiation
Học thuậtThân thiện
The scientist measures ultraviolet radiation from the sun with a special meter.
Definition
Noun: * Electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays: A type of invisible energy from the sun and artificial sources, with wavelengths approximately between 10 and 400 nanometers. It is often divided into UVA, UVB, and UVC categories.
Usage
- Ultraviolet radiation is a scientific and technical term used primarily in contexts related to physics, astronomy, health, and environmental science.
- It is commonly used to discuss its effects, such as causing sunburn, enabling vitamin D production, or posing risks that require protection.
Examples
- Noun:
- The ozone layer helps to filter out much of the sun's harmful ultraviolet radiation.
- Some insects can see ultraviolet radiation, which is invisible to the human eye.
- Prolonged exposure to ultraviolet radiation can increase the risk of skin cancer.
Advanced Usage
- "To be exposed to ultraviolet radiation": To be subjected to or come into contact with UV rays.
- Laboratory workers must take precautions to avoid being exposed to ultraviolet radiation from the equipment.
- "Block ultraviolet radiation": To prevent UV rays from passing through.
- These sunglasses are designed to block 99% of ultraviolet radiation.
Variants and Related Words
- Ultraviolet (UV) light (n): A common synonym, often used in less formal or general contexts.
- Ultraviolet light is used to sterilize medical equipment.
- Ultraviolet (UV) rays (n): Another common synonym, frequently used when discussing effects on living organisms.
- Apply sunscreen to protect your skin from UV rays.
- UV index (n): A standardized measurement of the strength of ultraviolet radiation from the sun at a particular place and time.
- The weather forecast warned of a very high UV index today.
Synonyms
- UV radiation: The abbreviated form.
- Actinic rays: A more technical term used in some scientific contexts, emphasizing the chemical effects of the radiation.
Related Phrases
- Ultraviolet radiation therapy: The use of controlled UV exposure for medical treatment, such as for certain skin conditions.
- The patient underwent ultraviolet radiation therapy for psoriasis.
- Ultraviolet radiation damage: Harm caused by overexposure to UV rays.
- Ultraviolet radiation damage to the eyes can contribute to cataracts.
The scientist measures ultraviolet radiation from the sun with a special meter.
Noun
- radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays