The source of electrons, the cathode, is a heated V-shaped tungsten filament or, in high-performance instruments, a sharply pointed rod of a material such as lanthanum hexaboride.
A pointed iron rod heated in the fire may be employed to bore holes in a mask for attachment to the costume and to permit the wearer to see.
While Franklin remained enamored of the idea that pointed rods could prevent lightning, scientists in England (with the same mistaken object in mind) decided the risks were too great.
And here we have a pivot point, a rod, a weight at the top.
I tried another cast but had no time to fish it out as Amanda pointed her rod toward the front of the boat and, looking for all the world like a neophyte water skier holding on for dear life, she ran forward, around the bow and then back to the rear as the albie dashed for safety, and Amanda tried to keep it from doubling over and breaking her rod.
Other forms are the inverted pendulum, in which a heavy mass is fixed to the upper end of a vertical rod pointed at its lower end, and the horizontal pendulum, in which a rod with a mass on its end is suspended at two points so as to swing in a nearly horizontal plane instead of a vertical plane.
He suggested that thunderstorms might be discharged in the same manner with elevated and pointed iron rods connected to the earth by a wire.
The wire-drawing process consists of pointing the rod, threading the pointed end through a die, and attaching the end to a drawing block.
The wire-drawing process consists of pointing the rod, threading the pointed end through the die, and attaching the end to a drawing block as shown in the figure.
It is generally better to release the line with the rod pointed at a high angle, almost vertical.
