What is Body: Definition and 1000 Discussions

Body art is art made on, with, or consisting of, the human body. The most common forms of body art are tattoos and body piercings. Other types include scarification, branding, subdermal implants, scalpelling, shaping (for example tight-lacing of corsets), full body tattoo and body painting.
Body art is also a sub-category of performance art, in which artists use or abuse their own body to make their particular statements.
More extreme body art can involve mutilation or pushing the body to its physical limits.
In more recent times, the body has become a subject of much broader discussion and treatment than can be reduced to body art in its common understanding. Important strategies that question the human body are: implants, body in symbiosis with the new technologies, virtual bodies, among others.

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  1. X

    Visualising Potential Wells in Two Body Systems

    I am currently working through Griffiths' textbook on quantum mechanics. The hydrogen atom was first modeled as a one body system with the proton fixed at the origin. In this case the potential was given by Coulomb's law, V(r) = -\frac{e^2}{4\pi\epsilon_0}\frac{1}{r} \ , where r is the radial...
  2. A

    Nitpicky details of solid body motion

    It should for nitpicky convenience's sake, be pointed out that unless the point we choose to calculate the moments around is the C.M of the rigid body, or that the the point moves parallell (including being at rest) to the motion of the C.M, we get an additional term on the RHS.
  3. M

    Clarification in concept of planar motion of rigid body

    When a Rigid body is said to be in planar motion, if all all the particles in the Rigid body moves in same plane and these planes are parallel to each other. I think i misunderstood this definition especially the particles moves in same plane and these planes are parallel to each other...
  4. andyrk

    Why can't atoms in body centred and face centred structures touch each other?

    Why can't the atoms along the edge of a body centred and a face centred structures touch each other? Is it something to with the reasoning that somehow if they were made to touch each other then we would not be able to get the face centred and body centred structure?
  5. K

    Calculating Spectral Range of Blackbody Radiation Intensity

    Hello! I am hoping someone could help. I have no idea where to start on this, and have been flipping pages for an hour or so trying to figure it out. Find the spectral range Δλ over which a blackbody's intensity B(1/2) is brighter than half of its peak value B(peak). (In other words, find the...
  6. MarkFL

    MHB Motion of Falling Body w/ Varying Drag: Farah's Q on Yahoo Answers

    Here is the question: I have posted a link there to this topic so the OP can see my work.
  7. F

    Black body radiation and maximum spectral density

    Hi, I've got a simple question regarding the maximum of the spectral energy density in Planck's black body radiation. It turns out that if you calculate which frequency has the most power associated with it (i.e. maximize R(\nu)), then you do it with wavelength as well, and compare, they're not...
  8. N

    Body of buddhist monk has not significantly decayed in over 80 years

    http://en.wikipedia.org/wiki/Dashi-Dorzho_Itigilov Is there any explanation for this? Maybe he pumped himself full of some kind of chemicals before he died and told them to exhume him, considering he knew medicine and pharmacology?
  9. M

    Forces acting on body placed in meniscus

    I have a question regarding forces in meniscus. Lets assume we have capillary 1cm in diameter. We pour some water into the capillary. We will observe concave meniscus. If we add some water (so water level exceed the height of the capillary) we will observe convex meniscus. Not let's...
  10. A

    Static friction in body with no intention to move

    Suppose a block of mass 5 kg is resting on a horizontal surface and coefficient of static friction between block and surface is 0.2. If the block is pushed against a vertical wall with a force of 200 N, will the static friction oppose the force? The body has no intention of moving as it is...
  11. W

    Life with low body temperatures

    Could there be complex life somewhere in the universe with body temperatures averaging 80 degrees F? I am curious if life of some kind could survive a body temperature that low and function normally.
  12. K

    Can a brain be kept alive and functioning outside a body?

    This is not a joke. Is it by all accounts impossible to do this, supposing that an artificial heart with artificial blood transport systems (that provide oxygen and all needed nutrients) were used to keep the cells from dying. Also, assuming the brain was yours, what would it feel like to...
  13. andyrk

    Specific Heat Capacity of a body

    How does the amount of heat absorbed by a body depend on the mass of the body and surrounding conditions such as pressure?
  14. T

    Stress in an accelerating body

    I don't really understand how to calculate the stress in a deformable body that is unconstrained and acted on by an external force. For example, consider a rod with a circular cross-section lying parallel to the x-axis. If one end is constrained from translating in the x direction and the other...
  15. marellasunny

    Free body diagram from whole system-direction of forces in free-body d

    Homework Statement A car and a trailer are connected by a joint. The car and trailer system are on a inclined place at a gradient of 8 degrees. The rolling friction coefficient along with other vehicle parameters are given.We are asked to draw the free body diagrams of the car and trailer...
  16. M

    Recursive model for body in fluid

    Good evening, I've been trying to wrap my head around this problem for some time and I just can't seem to get it straight. What I am trying to achieve: I want to program a recursive model that calculates the position of a moving body in a fluid after a certain time. What i have done...
  17. I

    N Body Problem (?) - Solar System Complexities

    Hi, This is my first post here, so if I make mistakes please be gentle with me. I have a 'problem' with a solar system I'm developing for a series of stories I'm writing. Those stories have nothing to do with Earth, and are set in a system unlike our own. To introduce the system, the...
  18. A

    Black Body Radiation: Why Objects Emit Different Wavelengths

    why or how does an object emit radiation of different wavelength for a given temperature?
  19. J

    Maxwell 3D - DC analysis on Human Body

    Hi, I am using a Human body model which I built for some simulation studies. I was trying to pass DC current through the Human body and though my Project completed the simulation successfully I got the below warning message. Can anyone please help me interpret it? The error log is as...
  20. H

    Simplifying many body operator expressions

    Hello all, Is there any really good software, package or otherwise, that is helpful for simplifying long operator expressions, particularly with (anti-commuting) electron operators? For example, I'd like to be able to transform Hamiltonians, project onto subspaces with specific occupation...
  21. Ackbach

    Confusion on Body Definition in Y&F, 9th, 4-49.

    Homework Statement From Young and Freedman's University Physics, 9th Ed., Problem 4-49. Two blocks are connected by a heavy uniform rope with a mass of ##4.00## kg. An upward force of ##200## N is applied to the top block, which has a mass of ##6.00## kg. The lower block has a mass of ##5.00##...
  22. A

    Relative Velocity, Rigid Body Kinematics

    Homework Statement W(oa) = -5k α(oa) = 3k B = 30 deg B(dot) = -2cos 30i + 2sin30j = Vrel b(double dot) = 4cos30i - 4sin30j) Homework Equations Va = Woa x Rao + Vrel The Attempt at a Solution This is such a simple problem and I don't know why I am messing it up. I am just...
  23. G

    Mass of orbiting body calculations

    Ok, so I am tryting to calcualte the mass of an orbiting body. I am using M = 4 * PI^2 * r^3 / ( G * T^2 ) Lets use the Earth as an example. However I am not getting what Nasa has for answers of 5.9 E24 kg. http://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html Using this...
  24. J

    The Sexiest Scientists: Building the Perfect Body and Mind

    Alright, let's get down to business. How important is it for you to be the best and sexiest scientist. We may be spending a lot of time in the lab but how much time are we spending sculpting our bodies at the gym :wink: and the mirror every morning! Also, feel free to comment and...
  25. A

    Is Pressure Important in Thermodynamics of Solid Materials?

    Hi. Consider a solid body placed in vacuum. How much is its pressure? Can we describe this body using thermodynamics if its pressure is zero?
  26. J

    Does tetrodotoxin look like something in the body?

    Blue-ring octopus' have this. It binds to Na channels in nerve cells. I don't know if you guys know this in here about biochemistry, but it includes a marvelous story of mimicry. Anyways, I was just wondering if tetrodotoxin looks like something, in the same way that LSD looks like...
  27. H

    Muscle contraction-invoke from outside the body

    Hello, Am not studying biology am engineer but iam just wondering if it is possible to make a muscle contract through external voltage maybe through some electrodes connected to some area on the skin. Regards Hisham
  28. K

    Fun question- what tricks can you do with a circuit through your body?

    My boyfriend is into magic, and he has a device that sends a small current through his body. His shoe has an electrode that is activated by a magnet in his other shoe; a wire runs up to a battery. As long as he is standing and grounded, it allows him to channel a small amount of electricity...
  29. B

    Gravitional Force On Composite Body

    Why is finding the gravitational force on the center of mass of a composite body the same as finding the gravitational force on each individual constituent of the composite body?
  30. H

    Can Total Charge of a Body Be Transferred Through Conduction?

    Is there any possibility of transfering the total charge of a body, in another body, by the process of "conduction of charge" ?
  31. andyrk

    Characteristics of a rigid body.

    Why is the angular velocity and angular acceleration(if the rigid body has some) same for all points on a rigid body?
  32. A

    What is the convention for writing vector magnitudes in free body diagrams?

    Do you normally write the magnitude of the vectors in free body diagrams? I have homework on this. Is there any convention when writing the magnitude?
  33. O

    Limit of charing a body by positive charge

    Hello all, I always read in texts that you can charge a body in air till the the electric field due to body does not exceeds the dielectric strength of air, which has a certain value. The question that is popping into my head is that, what if we charge the body in vacuum? I expect...
  34. A

    Spectral radiancy curve of a black body

    I was wondering about the spectral radiancy curve of a black body. How does the spectral radiancy of any other body looks like. I have seen one among many possibilities: http://www.giss.nasa.gov/research/briefs/schmidt_05/ Q 1. But i was thinking that for a general body (not a black body)...
  35. B

    What is the Maximum Load W1 That a Supported Beam Can Hold?

    Homework Statement As shown, a uniform beam of length l = 5.90 and 48.2 lb is attached to a wall with a pin at point B. A cable attached at point A supports the beam. The beam supports a distributed weight = 21.0 lb/ft. If the support cable can sustain a maximum tension of 300 lb , what is...
  36. R

    Euler Angles/ Rigid Body application

    I apologize upfront, as I have no experience with math to begin with. However, I have a real life problem I am trying to figure out here at work and I would appreciate some help. Here is my situation: Homework Statement In a 3 dimensional plane, I have an artillery piece pointing at...
  37. Jadaav

    Free body diagram - Weight and normal reaction

    Let's consider a stationary ball lying on the floor. The weight of the ball acts downwards and the normal reaction acts upwards. They are of the same magnitude but not of the same type. So normal reaction is the reaction to what, if not weight ?
  38. X

    Given some body with a constant force F acting on it upwards

    Given some body with a constant force F acting on it upwards (The body is subject to the gravitational force due to the earth) What's the correct statement? Or: K - Kinetic Energy
  39. T

    How to derive 3D body motion from accelerometers

    Hello All, Is is possible to the derive pitch, roll and translational acceleration, and the location of pitch and roll axes from a set of tri-axial accelerometers mounted on a rigid body? My initial though is that 3 accelerometers might be sufficient, but not sure. I need to do figure out the...
  40. Overflowing

    Black Body Radiator vs painted surface

    Recently on an aquarium related forum, I called out someone for making what I considered to be an outlandish claim and I was supported by several others. However I wish to get the opinion and/or facts explained by someone from a purely scientific standpoint. This has to do with the heat...
  41. N

    Free body diagram of person in elevator Help

    Homework Statement A man is on an elevator - Draw a FBD of the man if the elevator accelerates upwards - Draw an FBD of the man if ele. accelerates downwards Homework Equations F=m*a w=mg The Attempt at a Solution My FBD For the first one "elevator accelelartes upwards" means...
  42. T

    Torque and rigid body rotation

    Hello. My first post here. I'm having trouble with the basics of rigid body rotation. I have a few questions (my apologies if they are too childish; I'm very new to this): 1) Is torque (and other angular parameters like angular velocity, angular acceleration etc.) defined about a point or an...
  43. J

    Modeling Rigid Body - Unsure about Euler angles and angular velocity

    I'm modeling a single 3D rigid body in preparation for some more complicated modeling in order to gain a better understanding of Euler angles, the angular velocity vector and the rotating coordinate system. The body is rotated in inertial frame by an intrinsic ZXZ rotation, with respective...
  44. S

    Change in momentum when a body is thrown up and falls back down.

    Say, a body of mass 'm' is thrown at a certain angle with the vertical with certain initial velocity 'u'. The initial momentum of this object is mu. Am I right to say that if it spent 't' seconds in flight and came back, its final velocity will still be 'u'? And the change in momentum will be...
  45. A

    Energy left of body falling down to Schwarzschild radius

    Let us consider the case of a body falling down radially towards a Schwarzschild black hole. The velocity of the body is as high as it would be if it had been falling from standstill at infinity. When the body finally fuses with the black hole (get infinitely close to the Schwarzshild...
  46. sa1988

    Rigid body, circular motion - centripetal acceleration

    Hi all, new user here and straight in with a question to help me understand something. Not sure if I'm in the right sub-forum but oh well. Regarding circular motion and centripetal acceleration, we're given the classic example of a cyclist leaning into a corner to create a general equilibrium...
  47. A

    Direction of force acting on a body in uniform circular motion?

    Direction of force acting on a body in uniform circular motion?? Hello Sir/Ma'am I'm a a novice. I joined this forum to clear my doubts and improve my physics. Here is my question.. " We generally say, frictional force always acts in a direction, opposite to the direction of motion of a body...
  48. Alain De Vos

    How does a cell in the body knows it proper place and function

    E.g. you cut yourself in the finger. The cells seems to know they will become part of your finger. (No lung tissue will be formed in your finger)
  49. J

    Rotational Kinetic Energy of Body in another body reference frame

    I have two rigid bodies floating in space that are kinematically constrained by a joint (think of a 2 dof link mechanism floating in space). I have a body fixed reference frame on each rigid body plus the global space-fixed reference frame. The first rigid body is in the space-fixed...
  50. J

    How does LSD impact the brain and body?

    I don't know if this is the right subforum, but I have a question about LSD. First of, I do not take drugs. I'm trying to explain it to a friend. What are the positive (if any) and negative effects on your brain and body when on LSD? I looked online, but only found forums with a lot of bias...
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