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.

Laser levels offer precision, reliability, and a measure of safety. Unlike traditional bubble levels, laser levels project a beam of light that serves as a reference point for various construction ...

Different types of atoms have different energy levels. As a result each produces photons with different energy and so the line spectra for different elements will be different. This means that ...

Adding fresh accuracy to his otherwise dodgy DIY, Stuart Pritchard gets his life in line with the latest laser levels… The Evening Standard's journalism is supported by our readers. When you ...

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 ...

This causes an absorption spectra, as shown below. Because the energy levels are the same, the lines in the emission spectra of an element are in the same position as the lines in the absorption ...

If you need high-quality printing in a snap, a laser printer can produce clean, sharp prints in as little as a few seconds. But, after three weeks of testing each device, not all laser printers ...

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.

It’s important to carefully check the trims of the car you’re interested in to make sure that you’re getting the features you want, and aren’t overpaying for those you don’t want. Our ...

The CFA Institute, which administers the exam, suggests that you take about 300 hours of preparation time for the Level I exam. The amount of time required to study for the exam can be greater for ...

It’s important to carefully check the trims of the car you’re interested in to make sure that you’re getting the features you want, and aren’t overpaying for those you don’t want. Our ...