Name one instrument use to determine the atmospheric pressure

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader

What was the first instrument to ever record an earthquake?