A light push.

[xelasnave]

http://m.phys.org/news/2015-06-physicists-pressure.html

Check the above link.
Its not the one I was seeking to present here but old members will know why it caught my eye.

No the one I must find for members relates to discovering a force perpendicular... Back in a moment.

Alex

[xelasnave]

http://m.phys.org/news/2016-04-physi...-momentum.html
I should tell you briefly what the link is about but it seems folk just link things with no comment.
Heck its about light what more need you know.

Alex

[Atmos (Colin)]

Very interesting reads! It was not something that I'd ever come across in my studies but I had always assumed that light had a pushing force anyway