One of the first bits of science people studied, magnetism is still just as relevant today in everything from electric cars to body scans at the hospital. Gears Wheels with teeth carved around them can make you go faster or bump up your power—and here's how. ...
Today, most cars have two or three different types of braking systems: disc, drum, and handbrakes.Disc brakesPeer through the hubcap of a car's front wheels and you can usually see a shiny metal disc just inside. This is called a disc brake. When the driver steps on the brake pedal,...
That’s right, I drive a Kenmore. I like the old Kenmore, because unlike most new machines, it has metal gears, not plastic and even though it’s probably not designed to sew through heavy duty material, it will. Mostly, I use my Kenmore to make motorcycle bags, pouches and repair my...
[C](informal, especiallyAmE)a handle used to change the GEARS of a vehicle for orchestra [C]a BATON, used by the person who CONDUCTS an orchestra criticism [U](BrE, informal)criticism or harsh words:The referee got a lot of stick from the home fans. ...
But some of the latest electric cars and electric bicycles work a different way. Instead of having one motor powering all the wheels using gears or chains, they build a motor directly into the hub of each wheel—so the motors and wheels are one and the same thing. That's what we mean...
Quartz watches work in a very different way to pendulum clocks and ordinary watches. They still have gears inside them to count the seconds, minutes, and hours and sweep the hands around the clockface. But the gears are regulated by a tiny crystal of quartz instead of a swinging pendulum ...
Pulleys are examples of what scientists callsimple machines. That doesn't mean they're packed withenginesandgears; it just means they help us multiply forces. If you want to lift a really heavy weight, there's only so much force your muscles can supply, even if you are the world's stro...
In scientific terms, a car is an energy converter: a machine that releases the energy locked in a fuel like gasoline (petrol) or diesel and turns it into mechanical energy in moving wheels and gears. When the wheels power the car, the mechanical energy becomes kinetic energy: the energy ...
GearsPhoto: A gear is made from two or more wheels of different sizes with teeth cut into their edges to ensure they "mesh" (turn together without slipping).Gears are wheels with teeth that can either increase the speed of a machine or its force, but not both at the same time. ...
This is IBM's original, pioneering "DASD" disk storage device, developed continuously between the 1950s and the late 1960s (when it was finally patented). Remember that this predates the modern electronic age: it's a striking piece of intricate machinery with all kinds of motors, gears, ...