How Sensors Work

By Victoria G Christensen

Have you ever seen lights turn on automatically when you step into a room? Or have you ever wondered how a garage door knows to not close when someone is standing beneath it? What these and countless... This description may be from another edition of this product.

• Format: Library Binding
• Language: English
• ISBN: 1512407798
• ISBN13: 9781512407792
• Release Date: August 2016
• Publisher: Lerner Publications (Tm)
• Length: 40 Pages
• Weight: 0.65 lbs.
• Dimensions: 0.3" x 7.1" x 9.1"
• Age Range: 9 to 12 years
• Grade Range: Grades 4 to 7