Accession No

4523

Brief Description

Ritchie’s thermal demonstrator, 1/4 20th C.

Origin

France

Maker

Ritchie

Class

physics; demonstration

Earliest Date

1800

Latest Date

1900

Inscription Date

Material

wood (cork and at least 2 other types); glass; metal (brass); paint

Dimensions

length 342mm; breadth 180mm; height 390mm

Special Collection

Provenance

Purchased from Tesseract on 10/12/1995.

Inscription

‘A.C.P.L.- 400
13-12-A-8’ (painted on base)

Description Notes

The wooden base supports a U-shaped glass tube fixed to graduated wooden standards (each divided 0 - 20 [cm] numbered by 1 subdivided to 0.1) and topped with cylindrical hollow brass canisters. A central solid glass pillar rides on a wood block moving against an equal horizontal scale divided 10 - 0 - 10 numbered by 5 subdivided to 0.2 (1 = 5mm) and is topped with a large hollow brass canister. Each canister is painted with lampblack on one side and white enamel on the other. Top of each canister is topped by a short tube plugged by a cork)

Condition fair (paint chipping); complete.

References

Events