The headline is somewhat of a trick question: of course the effect did exist before the railroads. However, it wasn’t yet defined by the physics of the day, nor was it even noticed before the ...

Last night, my husband and I were preparing to watch Poker Face with our daughter. (If you haven’t seen this new show starring Natasha Lyonne, you should try it. It’s a combination of Columbo–in terms ...

Doppler radar stands as the most important modern invention in meteorology, fundamentally transforming how we predict, prepare for, and track severe weather events. Since installations began across ...

We have all noticed how the horn of a speeding car changes as it approaches: each wave-peak is emitted from a closer point, so the wave is “squeezed” and the pitch increases. As the car recedes, the ...

Queensland University of Technology provides funding as a member of The Conversation AU. When an ambulance passes with its siren blaring, you hear the pitch of the siren change: as it approaches, the ...