Exclamation of the above like "Eureka" (exclaimed by Archimedes taking a bath and suddenly understanding the law of upthrust) is generally an interjection used to celebrate a singular discovery or invention. On the other hand "oh yes cool great" can be a neutral exclamation.
It´s the best you can possibly and generally say about something but still completely meaningless. (As in "oh yes cool great” But what?)
-Newton and the apple equal gravity
-Stafford Beer: if it works it´s out of date