What is Machine: Definition and 966 Discussions

A machine is a human-made device that uses power to apply forces and control movement to perform an action. Machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal, or electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement. They can also include computers and sensors that monitor performance and plan movement, often called mechanical systems.
Renaissance natural philosophers identified six simple machines which were the elementary devices that put a load into motion, and calculated the ratio of output force to input force, known today as mechanical advantage.Modern machines are complex systems that consist of structural elements, mechanisms and control components and include interfaces for convenient use. Examples include: a wide range of vehicles, such as automobiles, boats and airplanes; appliances in the home and office, including computers, building air handling and water handling systems; as well as farm machinery, machine tools and factory automation systems and robots.

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  1. S

    Artificial rain cloud machine created by Israel scientists

    !Artificial rain cloud machine created by Israel scientists! Yesterday, while seeing spanish news, I was seeing are report of Israel scientists created a machine that produces artificial clouds with rain!The machine is a clear tube with an apparatus at the bottom and closed at the top...
  2. S

    Rain producing machine invented this year

    !Israel's rain producing machine invented this year! Yesterday I was watching Spanish news announcing that Israel scientists have invented a machine that produces artificial clouds with rain!. Israel scientists say they will use it for places in Israel where there is severe drought. Is this...
  3. benzun_1999

    Exploring the Possibility of a Time Machine

    Time machine... Dear Reader, The Time machine has always been a fantacy. i fell though it is a Fantacy it can be achieved one day, though not to the past maybe to the future. I hope someone will be interested in discussing about it. -benzun All For God.
  4. T

    How Can You Calculate Gravity Using an Atwood Machine?

    There is a problem in my physcs book that I have been trying to solve for some time now, and I just can't get trough it. If someone could help me a little bit, it would really be great. My question is about the Atwood machine. There are two blocks of same weight (M) suspended on a rope of...
  5. R

    I claim the discovery of the first time machine but i wont go any further since

    since i ve been menaced
  6. P

    Tattoo machine electromagnetics

    Hello, New to this forum, thanks for having me. I have been researching electromagnetics to better understand the workings of the tools of my trade (tattoo artist) and have come upon a number of questions and cannot seem to find the answers. I would appreciate any help to point me in the...
  7. T

    Rotational motion of a washing machine

    Hi everyone….well I have just started to learn about rotational motion, therefore, I am really confused so I have two different problems that I need help on. 1.) Q: A washing machine goes into the “spin cycle”. From rest the washer starts rotating, gaining 1 rev/sec of rotational velocity...
  8. C

    Crazy time machine guy from the future?

    does anyone know the physics forums that this guy is supposed to post on? He's supposedly from the near future and has a blueprint of a working time machine he built, lol. Anyone know?
  9. K

    Atwoods Machine - Mass Height Question

    The problem reads as follows: Two masses are each initially 1.80 m above the ground, and the massless frictionless pulley is 4.8m above the ground. What maximum height does the lighter object reach after the system is released? It gave me a hint to find the acceleration and velocity at...
  10. FZ+

    Exploring the Impossibility of a Perpetual Motion Machine

    I'm not sure if I got the name right, but anyways... Suppose we have a nanoscopically small, but very clever device. (and with modern technology, this sort of thing is becoming almost practical...) It is basically just two compartments, with a hole in between. Contained in the compartments...
  11. L

    Why Does an Atwood's Machine Behave as It Does?

    Okay, I had to do a problem concerning the Atwoods machine over the weekend. I'm not doing very well in Physics right now, and I don't have any friends in that class, so I thankfully found this place. I have already tried thinking about these problems... 1. If two objects of equal mass are...
  12. L

    Solving Atwood's Machine Problem

    Atwood's Machine Problem -- HELP Okay, I had to do a problem concerning the Atwoods machine over the weekend. I'm not doing very well in Physics right now, and I don't have any friends in that class, so I thankfully found this place. I have already tried thinking about these problems... 1...
  13. T

    With nanotechnology could we constuct an enzyme like machine

    I think i spelt it wrong but anywat. With the promisies of nanotechnolgy on the rise i was wondering. With nanotechnology could we constuct an enzyme like machine that willsplit away a proton from a lead atom truning it into a gold atom or am i just crazy...er
  14. Ivan Seeking

    Can X-rays penetrate clothing and reveal hidden objects?

    " To the eye, she is dressed in a skirt and blazer in dark, businesslike colors. On the monitor she is naked..." http://news.yahoo.com/news?tmpl=story2&u=/030625/168/4i6lv.html&e=1&ncid=1756
  15. D

    Can a powerful capacitor be used to create a flying machine?

    A couple of days ago while i was thinking about several stuff an idea came to me. Here goes. Imagine you have a really powerfull capacitor that has enough power to accelerate an electron to the speed of light, when the electron is put to the negative plate. The electron would never reach the...
  16. M

    Unlocking the Mystery: Exploring the Link Between Gravity and Magnetism

    Did anyone ever see on TV or read about (I think it was released to the press sometime late last year) the scientists who built that electromagnet that counteracted the force of gravity? They put a couple of different pieces of organic material in it and they started floating, one of which was a...
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