How liquids and gases behave at rest and in motion — buoyancy, pressure, and the flow that lifts aircraft and carries water through pipes.
Seven interactive experiments — all live.
Drop objects of different density into a fluid and see what floats, what sinks, and the upward force at play.
Open simulator →Push fluid through a narrowing pipe and watch it speed up while its pressure drops — the principle behind lift.
Open simulator →Press on a confined fluid and watch the pressure transmitted equally — the force-multiplying secret of the hydraulic lift.
Open simulator →Stream fluid past a cylinder and lower the viscosity to watch laminar flow break into a vortex street, then turbulence.
Open simulator →Drop a sphere into a thick fluid and watch drag climb until it cancels gravity — the steady terminal velocity that sorts sediment and sizes raindrops.
Open simulator →Drive viscous fluid down a pipe and watch it trace a perfect parabola — fastest at the centre, still at the walls, with flow scaling as the fourth power of radius.
Open simulator →Dip narrow tubes and watch the liquid's surface skin haul columns upward — climbing higher the thinner the bore, exactly as Jurin's law predicts.
Open simulator →