Physical Science 1.23: 6.3 Applications of Waves

Receives radio waves and converts them to electrical energy

Selects a specific frequency the user wants to hear

Converts the electrical energy into sound waves

Your computer converts information into electrical signals that it uses to play the video.

The information is received by a Wi-Fi antenna in your computer.

The information in the video is encoded in infrared waves that are sent through a fiber-optic cable.

The information reaches your router and is converted to EM waves of a different frequency.

Barcode scanner

Baggage security

Computer scanner

A

B

The signal moves instantly between a limited number of values.

The signal moves gradually among an infinite number of values.

People hear sound waves coming from an orchestra.

Data are stored on computers.

Visible light waves enter the camera and strike the detector.

Each pixel records the color and brightness of the light it receives as an electrical signal.

The code is stored by transistors as 1s and 0s based on whether each transistor has been set to "on" or "off".

The electrical signals are converted to a binary code of 1s and 0s.

The quality of copies does not decrease as more copies are made.

It is easy to copy a computer virus to a device.

Other people can access data that you don't want them to see.

The parts of devices that store data are stable.

Continuously varying

High or low