Heliograph

Description:

A heliograph uses sunlight to send signals. This example has two 5-inch diameter mirrors; one has a "HELIO 5 MARK V" inscription on the base. One brass ferrule on the wooden tripod is marked "STAND LAMP or HELLO A MK III P. B. & S. Ltd 1941." This was probably made by Barr & Stroud, Ltd., in Glasgow.

Ref: Bausch & Lomb Optical Co., Engineering Instruments (Rochester, N.Y., 1913), p. 142.

Location: Currently not on view

See more items in: Medicine and Science: Physical Sciences

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: PH.330319Catalog Number: 330319Accession Number: 290549

Object Name: heliograph

Measurements: overall: 40 in x 2 3/8 in; 101.6 cm x 6.0325 cmoverall: sighting vane: 10 3/8 in x 1 in x 5/8 in; 26.3525 cm x 2.54 cm x 1.5875 cmoverall: tripod, folded: 39 1/2 in x 3 in x 2 in; 100.33 cm x 7.62 cm x 5.08 cmoverall: mirrors and bracket: 8 in x 12 1/2 in x 6 in; 20.32 cm x 31.75 cm x 15.24 cm

Guid: http://n2t.net/ark:/65665/ng49ca746b2-963d-704b-e053-15f76fa0b4fa

Record Id: nmah_1802238

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.