One is shortwave radiation or short wavelength radiation and the other is longwave radiation/long wavelength radiation. The diagram below shows the range of shortwave radiations. There is no proper definition of shortwave radiations as there is no standard cut off for near infrared radiations range.
Cottage cheese is a fresh cheese curd product with a mild flavor. It is drained, but not pressed, so some whey remains and the individual curds remain loose.
If you're the DIY-type, this cheese and its firmer derivatives are some of the easiest cheeses to make at home. Tip: Cottage cheese can have a lot of sodium, especially when it's low-fat or nonfat. Be sure to check the nutrition label on the container before buying it. Some companies, such as Lucerne and Friendship Dairy, make no-salt-added versions.