Everyone's heard of leap years ... but what about leap seconds? Young scientists get acquainted with one of humankind's most awkward standard measurements with a short video from a PBS playlist covering space and time...

[Free Registration/Login may be required to access all resource tools.] Video explains the difference between analog and digital time and how to convert from digital to analog, paying close attention to where to place the hour hand based...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to match times on analog and digital clocks to the hour and half-hour. Includes video demonstrating a sample problem...

Signals and Systems covers analog and digital signal processing, ideas at the heart of modern communication and measurement. We present the basic concepts for continuous-time and discrete-time signals in the time and frequency domains....

This lesson will demonstrate how to determine the correct number of significant figures in a measurement (both analog and digital). It is 3 of 3 in the series titled "Significant Figures in a Measurement."

This lesson will demonstrate how to determine the correct number of significant figures in a measurement (both analog and digital). It is 1 of 3 in the series titled "Significant Figures in a Measurement."