caption: Wave Properties Frequency: the number of wavelengths that pass
exif: {"Image DocumentName": "Wave Properties Frequency: the number of wavelengths that pass", "Image ImageDescription": "a point in a given time interval. The symbol for frequency is, f. The unit for frequency is the Hertz (Hz). You can hear from 20 Hz to 20,000 Hz.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}