bell glass
Học thuậtThân thiện
Definition
Noun: A bell-shaped glass cover. Its primary functions are to protect and display delicate objects, to cover scientific apparatus in experiments, or to contain gases.
Usage
A bell glass is a clear, dome-shaped container. It is used to create a sealed or protected environment. * In a museum, a bell glass might cover a rare clock. * In a laboratory, a bell glass can be placed over equipment during a chemical reaction. * A plant under a bell glass is protected from dust and pests.
Examples
- The antique doll was preserved under a large bell glass.
- The scientist placed the burning candle inside a bell glass to observe the consumption of oxygen.
- For the exhibition, each fragile fossil had its own bell glass.
Advanced Usage
- In Horticulture: A bell glass (or cloche) is used to protect young plants from frost and to create a mini-greenhouse effect, warming the soil and air around the plant.
- In Historical Contexts: Before modern display cases, bell glasses were a common method for protecting and showcasing collectibles like taxidermy, scientific specimens, or prized ornaments in "cabinets of curiosity."
Variants and Related Words
- Cloche: A term often used interchangeably with bell glass, especially in gardening and culinary contexts (e.g., a cloche for a cake or a plant).
- Glass dome: A similar protective cover, though often with a less pronounced bell shape and sometimes permanently sealed to a base.
- Bell jar: A very close synonym. In many contexts, especially scientific, "bell jar" is the more common term.
Synonyms
- Bell jar
- Cloche
- Glass dome
- Cover
Related Phrases
- Under glass: A phrase describing items that are displayed or protected by a glass cover, such as a bell glass.
- The museum's most valuable coins are kept under glass.
Noun
- a bell-shaped glass cover used to protect and display delicate objects or to cover scientific apparatus or to contain gases