Accession No

5846

Brief Description

Magdeburg hemispheres, possibly American, mid 19th Century

Origin

American [tentative attribution]

Maker

Class

physics

Earliest Date

1800

Latest Date

1900

Inscription Date

Material

metal (brass)

Dimensions

diameter: 100mm when two halves together: length 265mm

Special Collection

Provenance

Purchased from Tesseract, Box 151, Hastings-on-Hudson, New York 10706 on 18/10/2001.

Inscription

Description Notes

Magdeburg hemispheres, possibly American, mid 19th Century.

The 100mm diameter brass hemispheres connect with shaped rims and are fitted with a rectangular keyed stopcock and two large ovular shaped brass handles. When evacuated of air, they will be pressed together by the external air with a force of 190 pounds, making it exceedingly difficult to pull them apart.

Condition fair.

References

Events