quang cầu
Definition
- Noun (Astronomy):
- Photosphere: The visible, luminous surface layer of a star, especially the Sun, from which its light and heat primarily radiate.
Usage Examples
- Noun:
- Nhiệt độ của quang cầu Mặt Trời vào khoảng 5.500 độ C. (The temperature of the Sun's photosphere is about 5,500 degrees Celsius.)
- Các vết đen Mặt Trời xuất hiện trên quang cầu. (Sunspots appear on the photosphere.)
Advanced Usage
- The term is primarily used in scientific and astronomical contexts. It is a compound of "quang" (light) and "cầu" (sphere), literally meaning "light sphere."
Variants and Related Words
- Khí quyển Mặt Trời / Nhật quyển (n): Solar atmosphere. This refers to the outer layers of the Sun, including the chromosphere and corona, which lie above the photosphere.
- Nhật hoa (n): Corona. The outermost part of the Sun's atmosphere, visible during a total solar eclipse.
- Sắc quyển (n): Chromosphere. The layer of the Sun's atmosphere located just above the photosphere.
Synonyms
- Photosphere
- Luminous surface (of a star)
Related Terms
- Vết đen Mặt Trời (n): Sunspot. A temporary, dark spot on the photosphere that is cooler than the surrounding areas.
- Hạt (n): Granule. A small, bright cell on the photosphere caused by convection currents of plasma.