An immediate call or signal for help may take very little time to get the attention of potential assistance.

Higher densities reduce the time a signal takes to travel between chips.

Receiving light and other signals from distant astronomical sources can even take much longer.

But any signal would take him off Ganymedeif he wanted to be taken.

Electromagnetic signals emitted on Earth would take some 35 years to reach these systems.

The signals took a thousand years to cross the compartments of space between the two systems.

We certainly can't radio for help, as the signals would take years to reach anybody.

Even the signal we're about to see took seventeen of their years to get here.

Being uncorrelated in time does not restrict the values a signal can take.

This signal took him all the morning and rather more.