Your average laser pointer just doesn’t have the appropriate beam for this kind of work, but with a diode pulled from a DVD burner and a driver circuit made from parts out of the junk bin ...

[Jerry] missed the laser cutters he had been using at the local TechShop. It closed down and after seeing some hardware in a surplus store he decided to build a laser cutter to call his own.

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Of all the models we tested, the DeWalt laser level proved to be one of the easiest to set up and use. It features a magnetic back as well as a beam clamp for attaching to angle irons, though most ...

Earlier this year the U.S. Army shot down a number of hostile drones in the Middle East using a weapon long dismissed as more science fiction than reality—the laser. After decades of costly ...

OEM parts are often more reliable and more expensive than aftermarket parts. Aftermarket parts are more widely available and cheaper than OEM parts. Whether an OEM or aftermarket part is best ...

who joined Alger in 1999 and runs Alger Capital Appreciation and Alger Spectra. Alger has stuck with its growth-oriented philosophy and has taken steps to strengthen its product lineup.

This causes line emission spectra to be produced, as shown below. This is not a continuous spectrum as only light of specific frequencies and specific colours are produced. Different types of ...

The realization of compact and reliable diode-pumped solid-state lasers that emit UV light is now opening the door to new industrial applications. Neil Savage describes the uses of the technology ...

Carbon dioxide lasers are gas lasers which emit infrared radiation. They are used for a variety of high power industrial applications. As discussed in the Lasers Selection Guide, all lasers consist of ...

Studying the line spectra produced by hot gases and absorbed by cooler gases allows us to identify the elements in stars. When a gas is very hot, it doesn’t emit all wavelengths of light.

The best color laser printers are a great investment that can save you time and money compared to cartridge-based inkjet printers. Laser printers use toner, which lasts a long time, delivering a ...