1.   An electrical pulse sends the atom to the tip of the microscope needle.

2.   An electrical pulse in a wire travels close to the speed of light.

3.   Beep sound waves are produced by the rapid oscillation of on and off electrical pulses, in either a square form or a sine wave form.

4.   A brief, strong magnetic stimulus makes nerve cells fire a rapid train of electrical pulses, George said.

5.   A simple chip produces the pattern of electrical pulses to the various light-emitting diodes.

6.   A small implanted wire or lead directly stimulates the correct nerve with small electrical pulses.

7.   For the laser, that might involve adding small but carefully timed electrical pulses to the circuit.

8.   If the sum rises above a certain threshold, it fires off its own electrical pulse, stimulating yet another set of neurons that behave in the same way.

9.   It stimulates the brain through electrical pulses generated by its Itrel II device surgically implanted under the skin near the collarbone.

10.   Kodak already makes a low-cost digital camera that captures images as electrical pulses rather than on grains of silver halide film.