frequency

We are concerned at the high frequency of racial attacks in the district.

The tanks broke down with increasing frequency.

Serious disasters appear to be increasing in frequency.

I'll be monitoring your frequency. Thank you, Nyota.

The young of ground-nesting warblers produce begging cheeps of higher frequencies than do their tree-nesting relatives.

Precise measurements can be made of the length and frequency of the infant's attention between two stimuli.

Except other letters also start appearing in the surrounding area of the screen with increasing frequency which creates a distraction and makes the task more difficult.

Another experiment demonstrated that physical exercise, which was sufficiently vigorous to double the rate of breathing, had no effect on the frequency of yawning.

The frequency with which certain simple motifs appear in these oldest sites has led rock-art researchers to adopt a descriptive term—the Panaramitee style—a label which takes its name from the extensive rock pavements at Panaramitee North in desert South Australia, which are covered with motifs pecked into the surface.

So as archaeologists, we built up a picture, a sequence of how pottery changed over time as well as how its popularity varied over time which we can tell by the frequency of a style at a site, how many occurrences we find at a given site.

Basically, when we date pottery, we look at its frequency at a given site.

That happy situation began to change in the 1980s, due to the increasing frequency of large forest fires that were essentially impossible to extinguish unless rain and low winds combined to help.

You can't hear waves of such a high frequency.

a frequency of 24 kilohertz

low frequency waves

Or as a physicist might put it, each bottle resonates at a particular frequency.

Basically, the phenomena of standing waves occurs when sound waves of the same frequency reflect off the walls and meet from opposite directions.

So the alligator can focus on sending other sound waves through the water, sound waves that you and I couldn't even hear since they are at such low frequency.

It's just that some parts of the wave have lower frequencies than others, OK? 

The entire wave is still considered very low frequency.

They produce a chirpy sound because the higher frequency parts of the wave reach the radio receiver before the lower frequency parts.

Um, today, we'll focus on radio waves, and specifically, very low frequency radio waves.

Not every researcher has been convinced that natural selection by birds is the only explanation of the observed frequencies of dark and light peppered moths.