Definition

1. Noun:
   • Acetylene lamp, carbide lamp: A type of lamp that produces light by burning acetylene gas, which is generated from the reaction of calcium carbide with water. It was commonly used before the widespread adoption of electric lighting.

Usage Examples

• Noun:
  • Người thợ mỏ cầm chiếc đèn đất để đi vào hầm. (The miner carried a carbide lamp to enter the tunnel.)
  • Trong bảo tàng có trưng bày một chiếc đèn đất cổ. (An old acetylene lamp is on display in the museum.)
  • Ánh sáng từ đèn đất không ổn định và có mùi đặc trưng. (The light from the carbide lamp was unsteady and had a distinctive smell.)

Advanced Usage

• This term is historical and technical. It is primarily used when discussing historical contexts, mining, caving, or early 20th-century technology.
• It can be used metaphorically to evoke a sense of the past or outdated technology.
  • Cuộc sống thời đó gắn liền với ánh sáng của đèn đất. (Life back then was associated with the light of carbide lamps.)

Variants and Related Words

• Đèn măng xông: A specific, often pressurized, type of acetylene lamp, sometimes used as a synonym in certain contexts.
• Đèn khí đá: A less common but descriptive synonym (literally "stone gas lamp"), referring to the calcium carbide source.
• Đèn hàn: Oxy-acetylene torch/welding lamp. While also using acetylene, this is a different tool for cutting/welding, not primarily for illumination.

Synonyms

• Acetylene lamp: The direct technical translation.
• Carbide lamp: The common English term, named after the calcium carbide fuel.

Related Phrases/Idioms

• There are no common idioms directly using "đèn đất." Its usage is literal.
• It may appear in descriptive phrases about the past:
  • Thời đèn đất: (The carbide lamp era) - Referring to a time before electric light was common.

1. Acetylen lamp, carbide lamp