Tag Archives: pointer
Best Laser Pointer Selection Increased For Spring/Summer Astronomy Season
With all of the advances that have been seen over the last year in the laser pointer field, its no surprise that as the weather gets warmer and more astronomy fans take to the outdoors, we see sales and improvements in various laser selections. If you are new to lasers or have been a seasoned [...]
Green Lasers – New Technology Pushing Laser Pointer Specs
There are literally thousands of different types of green lasers you can buy online, from pointers, to dpss laser modules, to laser display systems, so knowing what exactly you are looking for is important to getting a good deal. Most laser users are interested in hand held portable laser pointers and because green laser light [...]
Spyder 3 Laser Pointer Series Updates
All of the Spyder 3 laser models are in stock for summer and ready to go. With all of the advances in laser technology made over the last several years, the spyder III pro is the culmination of years of research. Available in green, blue, and red, this is one of the world’s most powerful [...]
HLP18130 Focusable 200mW Red Laser Pointer.
This is my first DealExtreme 200mW red laser. This video is made for DealExtreme.com reviews. – 200mW Red Laser Module – Powered 2 x CR2 batteries (Included) – Sealed head design prevents dusts from going in Duration : 0:4:25 addthis_url = ‘http%3A%2F%2Fwww.laserpointersblog.com%2Fred-laser-pointer%2Fhlp18130-focusable-200mw-red-laser-pointer’; addthis_title = ‘HLP18130+Focusable+200mW+Red+Laser+Pointer.’; addthis_pub = ”; Technorati Tags: [HLP18130], 200mW, 250mW, 300mw, 500mW, [...]
A small laser used as a pointer produces a beam of red light 7 mm in diameter, and has a power output of 8 mil?
A small laser used as a pointer produces a beam of red light 7 mm in diameter, and has a power output of 8 milliwatts. What is the magnitude of the electric field in the laser beam? The intensity of the beam I = P/A = 8.0×10^-3W/(pi*r^2) = 8.0×10^-3/(pi*(3.5×10^-3)^2) = 208W/m^2 The intensity is also [...]
Will an affordable green laser pointer work out OK for home interferometry?
Every time I go online looking for a decent laser to do some optical/interferometric/prismatic trickery with, I discover that any laser with a decent coherence length is some high-dollar laboratory-style giant that I would have to sell a bunch of important organs to afford… Bearing in mind that I am dirt poor, what are my [...]