caption: wave lengths a wave travels a certain distance before it starts to repeat
exif: {"Image DocumentName": "WavelengthA wave travels a certain distance before it starts to repeat. The distance between two corresponding parts of a wave is its wavelength.", "Image ImageDescription": "Transverse measure from crest to crest or trough to trough. Longitudinal measure from one compression to the next.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}