machine
Are you referring to simple machines?
wikipedia.org/wiki/Simple_machine
machine
A converging lens changes the direction of light through the process of refraction. A lens is a device that uses refraction to bend light to form an image.
The ratchet is a device which applies a pressure by slipping at a predetermined torque and thus prevents the spindle from moving further.
Work is present in situations where a force is applied to an object, and the object moves in the direction of the force. Examples include lifting a weight, pushing a cart, or pulling a sled. Additionally, work is done when energy is transferred, such as when electrical energy powers a device. Importantly, no work is done if the object does not move, regardless of the force applied.
A resistor resists the flow of current in a circuit but a transistor changes the amount of current through a device. This is called current magnification. Field effect transistors FETs and MOSFETs (metal oxide semiconductor field effect transistor) may also change the amount of current to a load lastly a variable resistor or a potentiometer or a variable resistor can variate the amount of current at your will
That amount is always less than the energy you put into the system. Divide the amount of useful energy you get from a system by the amount of energy you put into it, and you find the system's 'efficiency'.
A mechanical advantage device, such as a lever or pulley, changes the direction or amount of effort needed to do work. These devices allow us to apply a smaller force over a longer distance to accomplish a greater amount of work.
A lever is a simple machine that changes the direction or magnitude of the force applied to it. It can be used to increase the motion or force output from the input work.
A device that changes the direction of the current is called a "switch" or a "reversing switch." This device allows for the current to flow in different directions as needed.
A lever is a simple machine that can change the amount of force exerted by using a pivot point to either increase or decrease the force applied.
A lens is a device that changes the direction of light.
Machine
A simple machine, such as a lever or pulley, can change the direction or strength of a force by providing a mechanical advantage. These devices allow for easier movement or lifting of objects by distributing the force applied over a greater distance or by altering the direction of the force.
An inclineded plane
A pulley is a device that changes the size and direction of the force with only one movement. It allows you to lift heavy objects by pulling down on a rope that is wrapped around the pulley, changing the direction of the force needed to lift the object.
A converging lens changes the direction of light through the process of refraction. A lens is a device that uses refraction to bend light to form an image.
A device that helps make work easier by changing the size or direction of force is a machine. A simple machine has only one movement. A wedge has a moving inclined plane. A inclined plane has a sloped surface.
* a device that responds to mechanical strain. with a small change in resistance. ... * device for determining the amount of strain (change in dimensions) when a stress is applied