paraboloids
Bowl-shaped geometric surfaces
Paraboloids are three-dimensional surfaces generated by rotating a parabola around its axis.
The resulting shape resembles a bowl or dish.
Satellite dishes and reflecting telescopes use paraboloid shapes because they focus incoming parallel rays to a single point.
In mathematics, paraboloids come in two varieties: elliptic (bowl-shaped) and hyperbolic (saddle-shaped).
Outermost boundary layer
- ellipticOval in form
- hyperbolicExaggerated beyond reason
- vertexPoint where edges converge
- focusConcentrated attention point
axis · conic · curvature · revolution · directrix · equation · coordinate · asymptote
Light-redirecting surface
- mirrorReflective viewing surface
- dishFood container or recipe
- focal pointCenter of interest
- antennaBroadcast signal receiver
collector · concentrator · beam · radio telescope · headlight · searchlight · satellite dish · receiver
Hard outer covering
- roofBuilding's protective top
- canopyOverhead protective covering
- vaultSecure storage chamber
- saddleMounted rider's seat
tensile · membrane · ruled surface · formwork · spanning · pavilion · shade structure · structural
Parabolic broadcast receiver
- radarRadio-wave object detection
- microwaveRadiation-based kitchen heater
- waveguideStructure directing energy propagation
- gainPositive return received
aperture · tracking · power generation · concentrating · heating · melting · kiln · listening device
surface
Outermost boundary layer
- ellipticOval in form
- hyperbolicExaggerated beyond reason
- vertexPoint where edges converge
focus · axis · conic · curvature · revolution · directrix · equation · coordinate · asymptote · cross-section
reflector
Light-redirecting surface
- mirrorReflective viewing surface
- dishFood container or recipe
- focal pointCenter of interest
antenna · collector · concentrator · beam · radio telescope · headlight · searchlight · satellite dish · receiver · signal
shell
Hard outer covering
saddle · tensile · membrane · ruled surface · formwork · spanning · pavilion · shade structure · structural · lightweight
dish antenna
Parabolic broadcast receiver
- radarRadio-wave object detection
- microwaveRadiation-based kitchen heater
- waveguideStructure directing energy propagation
gain · aperture · tracking · power generation · concentrating · heating · melting · kiln · listening device
paraboloidsplanes
Aircraft or flat surfaces
spheres · ellipsoids · cylinders · cones · hyperboloids