Laser pointers are handheld and battery-powered gadgets which emit a beam of coloured light - usually red, green or blue. They have been used for decades by teachers and lecturers for highlighting ...

Only after these changes in wavelength and frequency can a beam finally be emitted. This process is often replicated to produce blue and violet output beams. The image below compares the physical ...

Last month we had the pleasure of bringing you [FireMyLaser’s] green laser spirograph. Just green is great for a while, but why not add red and blue for a full spectrum of color! [c4r0] steps in ...