GSFC's Terra mission detects indisputable evdence for gravity waves.
Ok, this was inspired by last month's Physics Today, but y'all remember that "gravity waves" are old fashioned fluid waves with gravity as the restoring force, and quite distinct from gravitational waves.
Those will come later.
More like this
Yes, this can be very complicated. But what should a middle-school student understand about light? You see stuff in textbooks that is either wrong or just a bunch of disconnected factoids (I like the word factoid).
He of uncertain principles asks Which do you prefer: transverse waves, or longitudinal waves? The fact builder chimes in with a
Transverse or longitudinal waves, purely as a matter of aesthetic preference? Transverse all the way, of course.
Hang ten!