Learners examine how a radiation pyrometer converts the frequency of electromagnetic waves to a temperature reading.

The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.

Students view the steps to follow to add complex numbers in Excel.

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

Learners read the definitions of working capital, current ratio, quick ratio, return on equity, accounts receivable turnover, and inventory turnover.

In this teaching and learning aid, the user can alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Guide the snake and avoid it biting you!

Basic terms found in the study of electricity.

A short test on EM waves

Alternative energy sources