heliostat's Usage Examples:

One of the most important applications of the heliostat is as an adjunct to the newer forms of ' horizontal telescopes (q.v.) and in conjunction with spectroscopic telescopes in observations of eclipses.

- Silbermann's Heliostat.

Silbermann's heliostat reflects the rays in any direction.

In the absence of a heliostat it is more convenient to obtain a point of light with the aid of a lens of short focus.

HELIOSTAT (from Gr.

In the absence of a heliostat the latter was the more convenient.

Foucault's heliostat reflects the rays horizontally in any required direction.