Quote from Brainstatic on April 3, 2012, 2:16 pm

Pipeline wrote:

I need a lower powered one that you can still see it's entire beam. Also, I live in the UK, so is it still possible to get them here?

Anyway, back on the off-topic topic of a slightly off-topic physics lesson, in a conventional medium, you won't really be able to see such a thin beam of light as a laser except for its origin and endpoint. A laser is a very focused stream of light. Being able to see the beam from the side would mean that the beam would be scattering, which wouldn't make for a very good laser. Of course, you can induce scattering by changing the medium to something a little more opaque than air, like smoke or some kind of vapor.

In general regarding your questions though, for our sake as well as for yours, Google is your friend. You don't have to wait for a response from Google like you do if you ask new questions here. Typing in a simple question or phrase in a Google search will yield a lot of what we have already told you.

Quote from msleeper on April 3, 2012, 2:56 pm

I'm locking this thread.