If a heart beats too slowly, the pacemaker will use electrical signals to help set a normal rate.

VOA: special.2010.06.02

The idea is to activate the remaining arm nerves to make electrical signals to operate prosthetic devices.

VOA: special.2009.03.10

All of the systems on the Mercury spacecraft sent radio signals to flight controllers.

VOA: special.2009.06.17

"And the brain is activated by this challenging environment and signals to the fat to stop the release of this hormone.

VOA: standard.2010.07.14

The short wave signals bounce off the ionosphere that surrounds the Earth,back to the ground and then back to the ionosphere.

VOA: special.2010.12.08

This temporarily blocks signals that pass through the nerves to the muscles of the body and back to the brain.

VOA: special.2009.01.06

He learned to get light to go far enough down a glass fiber to pass on signals.

VOA: special.2009.12.08

The device made it possible to strengthen radio signals and to send them over long distances.

VOA: special.2010.01.31

They also suggested taking measures to reduce exposure to the signals, like hands-free devices or texting.

VOA: special.2011.06.06

Electric signals start in nerve cells and travel along these fibers to and from the brain.

VOA: special.2009.01.06

During the second orbit, one of these signals warned that the heat shield might not be locked firmly to the bottom of the spacecraft.

VOA: special.2009.06.17

Mister Kao discovered how to transmit,or send,light signals over long distances through optical glass fibers.

VOA: special.2009.12.08

In people with MS, when nerve signals reach a damaged area, some of the signals are blocked or delayed from traveling to or from the brain.

VOA: special.2009.01.06

And mixed economic signals continue to call into question how long it will take for the country to emerge from recession.

VOA: standard.2010.01.06