| 1. | A removable pot, with handle and lid, fits inside the vacuum flask.
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| 2. | The now-famous vacuum flask was invented by Sir James Dewar in 1892.
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| 3. | The vacuum flask prevents the water from going up the B�chner flask.
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| 4. | The guampas and leather-covered vacuum flasks are often personalized with names or logos.
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| 5. | Dewer's first vacuum flask in 1892 had a silvery mercury coating.
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| 6. | Thermos bottles are smaller vacuum flasks fitted in a protective casing.
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| 7. | A vacuum cooker ( ) is a stainless steel vacuum flask.
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| 8. | The vacuum flask consists of two cork or polyethylene plastic.
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| 9. | Vacuum flasks, or Dewars, are silvered to approach this ideal.
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| 10. | The Thermos, a vacuum flask adapted for lunch box use, was introduced in 1904.
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