![Ralph Alpher Image source: AIP Ralph Alpher Image source: AIP](http://www.timeone.ca/wp-content/uploads/2012/05/Ralph-Alpher.jpg)
Image source:
AIP
Ralph Alpher was an American physicist who with Robert Herman predicted the existence and frequency of the cosmic microwave background radiation.
Image source:
AIP
Ralph Alpher was an American physicist who with Robert Herman predicted the existence and frequency of the cosmic microwave background radiation.