the radiant hour

[Dave Monroe]

On 6/30/07, Ya Sam <takoitov at hotmail.com> wrote:

> See as well
>
> "Errors in the radiant hour angle (∆H) and declination (∆ä) are.
> indicated by the lines (solid) surrounding the radiant line (dashed). "
>
> http://www.google.com/search?q=%22radiant%20hour%20angle%22&sa=N&tab=pw

> We wish to determine the radiant hour angle when the echo line corresponding
> to a radiant at declination 8 intersects a point on the echo surface at ...
>
> http://books.google.com/books?um=1&tab=wp&q=%22radiant%20hour%20angle%22
>
> A meteor shower's name is usually derived from that of the constellation (or
> of a star therein) in which the shower's radiant is situated—i.e., the point
> in the sky from which perspective makes the parallel meteor tracks seem to
> originate.
>
> http://www.britannica.com/eb/topic-488478/radiant

Thanks!  Was wondering when this usage would come up ...