For machines such as the SwissFEL (Swiss Free Electron Laser), the required HV pulse stability is 15 ppm (parts per million). Stability is calculated from measurements of 100 consecutive pulses taken ...
The House backed a bill to prevent federal money from flowing to five biotech companies with Chinese ties, described as necessary to protect Americans’ health data and reduce reliance on China for U.S ...
Most atoms are made from positively charged protons, neutral neutrons and negatively charged electrons. Positronium is an exotic atom composed of a single negative electron and a positively charged ...
People considering alternatives to eyeglasses or contact lenses may be considering laser eye surgery and want to know how it works, if it is painful, and if it is permanent. Learn more about how laser ...