The company’s chief executive, Elon Musk, said this week that it would stop making the car, an electric pioneer in 2012, as well as the Model X. By Neal E. Boudette Thirteen years ago, Mike Ramsey, an ...

In this video, we model a catenary curve using a mass-spring system, showing how a chain-like shape can emerge from discrete masses connected by springs. We connect the simulation to real physics, ...

Several MBTA Commuter Rail trains were canceled Monday morning due to a range of issues, the agency announced in social media posts. Two Worcester Line trains — Train 505, scheduled to leave South ...

Fiber uses fiber-optic lines that transmit data at the speed of light, whereas cable uses coaxial cables, which are traditionally used for TV service. Fiber typically offers faster upload and download ...

In a matter of just a few short years, Apple's AirPods have gone from the sleek new way to connect to iPhone and other mobile devices to pretty much the only way to connect to them. There has, of ...

Abstract: Noncrossing catenary turnout section is a specific catenary arrangement for electrified railways. The height of the contact wire changes dynamically to enable the pantograph to transition ...

A catenary system delivers power to electric trains through overhead wires. It consists of a contact wire, suspension cables, and supporting structures that keep the system stable. When the train’s ...