hydrostatics
Still-water pressure science
Hydrostatics is the branch of physics dealing with fluids at rest—specifically, the pressure and equilibrium of liquids that aren't flowing.
The field addresses practical questions like water pressure in tanks, buoyancy of submerged objects, and the design of dams and hydraulic systems.
The engineer applied hydrostatics to calculate the force on the submarine hull.
Ability to stay afloat
- displacementRemoval from usual location
- upthrustForceful upward push
- ArchimedesGreek polymath, physicist
- submersionBeing entirely underwater
waterline · draft · freeboard · ballast · pontoon · buoy · lifejacket · submarine
Fluid's upward resistance
- fluid pressureForce exerted by liquids
- equilibriumState of balance
- densityMass-to-volume ratio
- specific gravityDensity ratio versus reference
displacement · incompressibility · pressure gradient · isostasy
Water-holding barrier
- reservoirLarge water storage basin
- leveeRiver flood barrier
- caissonWatertight underwater enclosure
- cofferdamWatertight enclosure for underwater construction
aqueduct · lock · sluice · penstock · retaining wall · water tower · hydraulic press · pressure vessel
Instrument measuring gas pressure
- barometerInstrument gauging atmospheric pressure
- hydrometerLiquid density measuring instrument
- pressure gaugeMeasures force on surfaces
- U-tubeCurved tube, often glass
water column · pascal · atmosphere · torr · millibar · depth gauge
Entering water deliberately
- submarinesUnderwater naval vessels
- hydraulic systemsMachinery using pressurized liquid
- water supplyProvisioned H2O delivery system
- blood pressureCirculatory force measurement
aquarium · deep-sea exploration · hydraulic lift · artesian well · sphygmomanometer · water tank · atmospheric pressure
flotation
Ability to stay afloat
- displacementRemoval from usual location
- upthrustForceful upward push
- ArchimedesGreek polymath, physicist
submersion · waterline · draft · freeboard · ballast · pontoon · buoy · lifejacket · submarine · neutral buoyancy
buoyancy
Fluid's upward resistance
- fluid pressureForce exerted by liquids
- equilibriumState of balance
- densityMass-to-volume ratio
specific gravity · displacement · incompressibility · pressure gradient · isostasy
dam
Water-holding barrier
cofferdam · aqueduct · lock · sluice · penstock · retaining wall · water tower · hydraulic press · pressure vessel · bulkhead
manometer
Instrument measuring gas pressure
- barometerInstrument gauging atmospheric pressure
- hydrometerLiquid density measuring instrument
- pressure gaugeMeasures force on surfaces
U-tube · water column · pascal · atmosphere · torr · millibar · depth gauge
diving
Entering water deliberately
- submarinesUnderwater naval vessels
- hydraulic systemsMachinery using pressurized liquid
- water supplyProvisioned H2O delivery system
blood pressure · aquarium · deep-sea exploration · hydraulic lift · artesian well · sphygmomanometer · water tank · atmospheric pressure
- Greek scienceAristotle, Archimedes, Euclid, Ptolemy, Hippocrates
- ArchimedesArchimedes screw, eureka, eureka moment, buoyancy, water displacement
- natural philosophyphysics, mechanics, matter, motion, chemistry
- Water Propertiessalinity, temperature, density, viscosity, pH
- fluid dynamicsfluid mechanics, fluid flow, turbulence, fluid motion, streamlines
- Early Physicsclassical mechanics, experimental physics
hydrostaticshydrodynamics
Science of liquid motion
fluid dynamics · hydraulics · aerodynamics · fluid flow · turbulence
- hydrostatic skeletonFluid-filled cavity providing support