1.   A laser is an exceptionally bright source of light so the light can travel much further between successive repeaters.

2.   This is not surprising as the Nd Yag laser is only capable of safely treating intraluminal tumours.

3.   An Erbium laser is more superficial.

4.   And two studies showed the laser is as safe and effective as a high speed drill, the agency said.

5.   A laser is no more effective than a balloon in opening blocked coronary arteries, according to a Dutch study to be published Friday.

6.   A laser is just an incredibly intense beam of light, and like a flashlight at a distance, that light can dissipate and lose focus.

7.   After that, which made everything go dark for about a minute, the actual laser was not that bad.

8.   But it happened years ago, and now there are lasers everywhere, and he probably is tired of being asked about it.

9.   Can lasers be far behind?

10.   FAA officials suspect more powerful lasers were involved in the flashes seen by commercial jet pilots in recent months.