Exempel på bell jar

• Air under a bell jar may be kept dry by means of a basin of sulphuric acid, and gases bubbled through it are freed from water-vapour. 

• By keeping some of this covered with a bell jar for a week or two, so as to retain the moisture, at the end of this time a large crop of the fungus will probably have made its appearance. 

• The whole electrolysis vessel is then placed under a glass bell jar containing dry air, and kept in a refrigerator until again required for use. 

• Bell jars are generally used for classroom demonstrations or by hobbyists, when only a relatively low-quality vacuum is required.

• Although internationally connected, each country's elite lives in a bell jar in the sense of being out of touch with its own populace.

• By pumping the air out of the bell jar, vacuum is formed.

• She describes her depression as a feeling of being trapped under a bell jar, struggling for breath.

• As the family laugh together, it is revealed that they are models inside a bell jar on the street stall seen earlier.

• He portrayed the device as a bell jar with an opening for the air to enter from below.

• For this reason, a bell jar can not be used to contain pressures "above" atmospheric, only below.

• A bell jar demonstrates the reason for using a rocket instead of a propeller in the vacuum of space.

• An example of a classroom science experiment involving a bell jar is to place a ringing alarm clock under the bell jar.

• A bell jar is placed on a base which is vented to a hose fitting that can be connected via a hose to a vacuum pump.

• As the air is pumped out of the sealed bell jar, the noise of the alarm clock fades, thus demonstrating that the propagation of sound is mediated by the air.

• They also were expensive compared with traditional gardeners' bell jars and cloches.

• More often, a cloche, or bell jar, refers to a covering made of glass or plastic, placed over individual plants to provide similar protection as row cover.

• The table is covered with scarlet velvet, many papers, a casket, an inkwell with two more feather pens, a barometer, a gasometer, a water still and a glass bell jar.

• His name apparently refers to bell jars.