Definition

1. Noun:
   • Radiometer: A scientific instrument used for detecting and measuring radiant energy or electromagnetic radiation, such as light or heat.

Usage Examples

• Noun:
  • Nhà khoa học sử dụng bức xạ kế để đo cường độ ánh sáng mặt trời. (The scientist uses a radiometer to measure the intensity of sunlight.)
  • Bức xạ kế trên vệ tinh giúp theo dõi bức xạ nhiệt từ Trái Đất. (The radiometer on the satellite helps monitor thermal radiation from Earth.)

Advanced Usage

• "Bức xạ kế Crookes": Crookes radiometer. A specific type of radiometer contained in a partial vacuum with vanes that spin when exposed to light, often used for demonstration.
  • Bức xạ kế Crookes trong phòng thí nghiệm quay khi đặt dưới ánh sáng mạnh. (The Crookes radiometer in the lab spins when placed under a strong light.)

Variants and Related Words

• Máy đo bức xạ (n): Radiation meter. A more general term for devices that measure radiation.
  • Kỹ thuật viên kiểm tra mức độ an toàn bằng máy đo bức xạ. (The technician checks the safety levels with a radiation meter.)

Synonyms

• Radiation detector: A device that senses the presence of radiation.
• Radiometer: The direct and most precise technical equivalent.

Related Terms

• Bức xạ (n): Radiation. The emission of energy as electromagnetic waves.
• Đo lường (n/v): Measurement / to measure. The process of determining the magnitude of a quantity.

1. Radiometer