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How Removing Public Monuments Works

science.howstuffworks.com/engineering/structural/removing-public-monuments.htm

Controversy surrounds the removal of public monuments honoring the U.S. Confederacy. But who or what determines which monuments go up or come down?

How Reverse Osmosis Works

science.howstuffworks.com/reverse-osmosis.htm

How does reverse osmosis work? Find out how a semipermeable membrane can act as a filter for some particles while letting others pass through.

How Reverse Psychology Works

science.howstuffworks.com/life/inside-the-mind/human-brain/reverse-psychology.htm

Ever tried to get your child, spouse or friend to do something by telling them to do the opposite? That's reverse psychology. But how often does it work?

How Revolvers Work

science.howstuffworks.com/revolver.htm

The revolver turned shooting a round into a one-step process, forever changing the face of crime, law enforcement and self-defense. Find out what goes on inside a revolver.

How Robot Armies Will Work

science.howstuffworks.com/robot-armies.htm

Robot armies could soon account for up to one third of all vehicles currently in service. Learn about robot armies and robot army development.

How Robots Work

science.howstuffworks.com/robot.htm

Robots are becoming increasingly sophisticated and lifelike. Learn about robots, the latest robot technology and how close we are to artificial intelligence.

How Rocket Engines Work

science.howstuffworks.com/rocket.htm

Rocket engines harness the energy to get a spaceship off the ground. Learn about solid-fuel rocket engines, liquid-propellant rockets and the future of rocket engines.

How Rocket-Propelled Grenades Work

science.howstuffworks.com/rpg.htm

Rugged and simple, suitable for downing helicopters, disabling tanks or attacking buildings at close range -- in the hands of a skilled operator, the RPG is a lethal and versatile weapon.

How Rogue Waves Work

science.howstuffworks.com/environmental/earth/oceanography/rogue-wave.htm

Rogue waves are colossal waves that seem to appear out of nowhere. Learn about rogue waves and find out what can cause rogue waves to appear.

How Roller Coasters Work

science.howstuffworks.com/engineering/structural/roller-coaster.htm

They don't have engines, brakes or accelerators. No, these amazing machines rely on physical, centripetal and gravitational forces to urge thrills, screams and that sinking stomach feeling we all love (and hate). Read more about the science of fun.

1981 - 1990