fundamental frequency
phys. The component of lowest frequency in a complex waveform, as in sound. སྒྲ་ལྟ་བུའི་རྙོག་འཛིང་ཅན་གྱི་རླབས་ཤིག་གི་ཟློས་ཕྱོད་དམའ་ཤོས་ཀྱི་གྲུབ་ཆ་དེ་ལ་གོ
fundamental interactions
phys. The four different types of interaction that can occur between bodies. These interactions can take place even when the bodies are not in physical contact and together they account […]