You do not detect any changes by the looks of the place.

But 1 figured, maybe the current was too low to detect by hand.

They provide ways to detect and stop suspicious activities by any state.

"I will see if the fence detects me by the time you return."

The system is not set up to detect abuses by long-distance companies.

He'll be his usual self and impossible to detect by normal means.

They also seem to detect prey by the sound of their approaching flight.

Impossible to detect by any means known to science today, they are mathematical curves.

However, we might be able to detect the presence of the star by the effect that its gravitational field would have on nearby matter.

You'd never detect shadow matter by firing particles at it.