Definition

1. Adjective:
   • Weightless: The state of having no apparent weight, typically experienced when an object is in free fall or in outer space where gravitational forces are counteracted. It describes the sensation or condition of not being pulled by gravity.

Usage Examples

• Adjective:
  • Các phi hành gia trải nghiệm cảm giác phi trọng lượng trên trạm vũ trụ. (Astronauts experience a weightless sensation on the space station.)
  • Môi trường phi trọng lượng là cần thiết cho nhiều thí nghiệm khoa học. (A weightless environment is necessary for many scientific experiments.)

Advanced Usage

• "trạng thái phi trọng lượng": weightless state or microgravity condition.
  • Tàu vũ trụ tạo ra trạng thái phi trọng lượng trong vài phút. (The spacecraft created a weightless state for several minutes.)

Variants and Related Words

• Không trọng lượng (adj): synonym for weightless, often used interchangeably.
  • Mẫu vật được giữ trong điều kiện không trọng lượng. (The specimen was kept in weightless conditions.)

Synonyms

• Weightless: having little or no weight due to the absence of gravity.
• Zero-gravity: pertaining to a state where gravitational pull is negligible (often used as a related technical term).

Related Scientific Context

• Microgravity: a condition of very weak gravity, often used synonymously with weightlessness in space science.
  • Hiện tượng phi trọng lượng trên tàu vũ trụ thực chất là môi trường vi trọng lực. (The weightless phenomenon on a spacecraft is essentially a microgravity environment.)

1. Weightless