In some specialized oscillators, two driving forces with significantly different frequencies can work together to make the whole system resonate. Widely studied in many different fields, 'nonlinear' ...

Electromagnetism and the weak nuclear force are two distinct fundamental forces. That wasn’t always the case. How many fundamental forces are there in our universe? For particle physicists, answering ...

Matter particles are only one part of the recipe for everything students see around them. The particles in matter must interact; otherwise the universe would just be one big collection of quarks and ...