The Museum of Unworkable Devices Physics Gallery

Perpetual motion machine inventors do have principles. Unfortunately the physical principles they assume are often ones not obeyed by nature. Let's examine just a few. The principle of unlimited possibility. Anything is possible Inventors assume that since we haven't looked at every part of the universe nor have we looked at all possible mechanisms or phenomena, we can't rule out anything. Those who think this way are much like the child who puts two blocks in a box, closes the box, shakes it, then opens it, hoping to find three blocks inside. The "heavier on one side" seduction. The most naive level of perpetual motion seduction is the notion that if a system has more mass on one side of the axle, then that side must swing downward. We can test its stability by turning the wheel to any position whatever. The earliest unbalanced wheel of Bhaskara underwent countless modifications and embellishments over centuries. The situation is worse than that. But this isn't a valid test.

User:Transfinite/Mecha as Practical War Machines The Land Walker is an example of a real life attempt at creating mecha Mecha as Practical War Machines[edit] The question of whether mecha could ever be used in the real world as practical war machines is a widely debated topic on many mecha forums. Due to their intended purpose, mecha are usually compared to tanks (or, in the case of Gundam or Macross, fighters). Mecha as a Replacement for Tanks[edit] Mobility[edit] The counter argument against this centers around balance. Similarly, a biped mecha could cross relatively uneven terrain. Not only computers, but the movement system of the legs would need heavy machinery to do the actual lifting of the legs. Agility[edit] Another argument is superior agility. Theoretically, a mecha can move in an unpredictable manner to present a more difficult target and/or dodge incoming fire. Height[edit] Another argument, and perhaps the weakest argument, is the greater height of the mecha compared to a tank. Method of Motion[edit] Weapon Systems[edit]

What causes gravity - dark energy, the new aether List of engineering branches Engineering is the discipline, art, and profession that applies scientific theory to design, develop, and analyze technological solutions. In the contemporary era, is generally considered to consist of the major basic branches of chemical engineering, civil engineering, electrical engineering and mechanical engineering.[1] There are numerous other engineering subdisciplines and interdisciplinary subjects that are derived from concentrations, combinations, or extensions of the major engineering branches. Chemical engineering[edit] Chemical engineering comprises the application of physical and biological sciences to the process of converting raw materials or chemicals into more useful or valuable forms. Civil engineering[edit] Civil engineering comprises the design, construction, and maintenance of the physical and natural built environments. Electrical engineering[edit] Electrical engineering comprises the study and application of electricity, electronics and electromagnetism. See also[edit]