President Donald Trump's oversight of an increasingly unreliable U.S. power grid requires swift action, he said this week, ...

De Forest put a metal grid in the middle of the vacuum tube. By using a small input current to change the voltage on the grid, De Forest could control the flow of a second, more powerful current ...

In addition to “the obvious fact that the fire hasn’t come close to the sign,” Scheirer pointed out a discrepancy in the metal grids that hold up the letters, noting that authentic images of ...

The novel manufacturing technique was discussed in the study “Enhanced near infrared light trapping in Si solar cells with metal nanowire grid front electrodes,” published in Solar Energy ...