Gravity

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Gravity

• And Anti-Gravity

A Brief Look at the Concept of Gravity
By Mike Cao Grade 9, Block C
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Contents

• -What Is It?
• -Newtons Theory
• -Einsteins Theory
• -The Force of Gravity
• -Anti-Gravity
• -Bernoulli-Effect Enhancer
• -Claims at Anti-Gravity
• -Isaac Newton
• -Albert Einstein
• -Gravitons
• -Works Cited
• -Activity

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What is it

• -First theory of gravity developed by Sir Isaac
  Newton

-This theory described gravity as a force,
pulling objects in.
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Newtons Theory

• Newtons theory of universal gravitation is as
  follows
• 6.67 10-11 N m2 kg-2
• This basically means that the amount of force
  gravity is exerting on an object is dependant on
  the mass of the two (or more) objects and the
  distance between them.
• Problems
• -Inaccurate at long distances
• -Some cases where it is incorrect (E.g.. the
  orbit of mercury)
• -Requires instant application of the force of
  gravity (for gravity to affect objects instantly
  with no delay)

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Einstein's Theory

• -Einsteins Theory was
• -He claimed that the universe was like a flat
  surface

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The Force of Gravity

• -The strength of gravity compared to other
  forces is very small, which puzzles many
  physicists
• -The strength of gravity is 6 x 10 to the
  negative 39th
• -Very small compared to the other forces
• -Causes (hypothetical)
• -Unknown side to gravity
• -Reaches into other dimensions (if they exist)
• -Other possible causes such as the large scale
• -May just be that way

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Anti-Gravity

• -Many attempts at anti-gravity
• -Is not using force to overcome gravity

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Bernoulli-Effect Enhancer

• -Uses electricity to ionize air
• -Is not anti-gravity as it uses another force
  to neutralize gravity

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Claims at Anti-Gravity

• -No anti- gravity devices yet proven
• -Cannot use another force to overcome gravity
• -Magnetism, air flow, and other forms of
  propulsion all do not count
• -Definition is that gravity does not act upon
  that object

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Isaac Newton

• -Came up with the first theory of gravity
• -Defined it as a force pulling objects towards
  each other.
• -Used a series of equations to describe the
  force

Born on January 4, 1643 Rumored to have been
inspired by an apple falling on his head.
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Albert Einstein

• -Wrote a new theory of gravity (General
  Relativity)
• -Claimed objects can warp the fabric of space
• -This warping attracts objects towards other
  objects
• -Supports the idea of singularities and black
  holes

Born March 14th, 1879 Was awarded a Nobel Prize
in physics
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Gravitons

• -Physicists propose the existence of gravitons
• -Gravitons are particles which act like
  messengers
• -If they exist they must be incredibly small
• -This corresponds with Newtons theory that
  gravity is a force, and therefore needs a
  messenger particle to deliver that force.
• -Problem with the gravity has infinite range
  theory

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Works Cited

• "Links." IFO. LaesieWorks. 15 Oct 2007
  lthttp//www.laesieworks.com/ifo/links/index.htmlgt.
  
• Holme, John. "Was Hitler right in wanting to wipe
  the Jews off the face of the earth? ."
  JohnHolme.com. 06 Mar 2007. 29 Sept 2007.
  lthttp//www.johnholme.com/gt.
• "Isaac Newton." Vicifons. Wikisource. 09 Oct 2007
  lthttp//la.wikisource.org/wiki/ScriptorIsaacus_Ne
  wtonusgt.
• Sowash, Chad. "Building a labor rocket ship! ."
  Archive for the 'compliance' Category. 10 July
  2007. the CHAD. 02 Oct 2007 lthttp//thechad.jobcen
  tral.com/index.php/category/compliance/gt.
• "magnetism." iStockphoto. 02 Mar 2007.
  iStockphoto. 14 Oct 2007 lthttp//www.istockphoto.c
  om/file_closeup/?id2975024refnum572910gt.
  "Bernoulli Effect Enhancement." American
  Antigravity. American Antigravity. 12 Oct 2007
  lthttp//www.americanantigravity.com/bernoulli.html
  gt.
• "Manipulating Numbers." 21 Sept 2007
  lthttp//www.uwm.edu/People/johntroy/Index.htmgt.

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More Works Cited

• "Bernoulli Effect Enhancement." American
  Antigravity. American Antigravity. 12 Oct 2007
  lthttp//www.americanantigravity.com/bernoulli.html
  gt.
• "Manipulating Numbers." 21 Sept 2007
  lthttp//www.uwm.edu/People/johntroy/Index.htmgt.
• Hughes, Scott. "8.962 General Relativity, Spring
  2006." Mitopencoursewear. Massachusetts Institute
  of Technology. 15 Oct 2007 lthttp//ocw.mit.edu/Ocw
  Web/Physics/8-962Spring-2006/CourseHome/index.htmgt
  .
• "Sir Isaac Newton The Universal Law of
  Gravitation." Astronomy 161 The Solar System. 07
  Oct 2007 lthttp//csep10.phys.utk.edu/astr161/lect/
  history/newtongrav.htmlgt.
• "Introduction to General Relativity." Physics At
  Florida State University. Florida State
  University. 29 Sept 2007 lthttp//www.physics.fsu.e
  du/Courses/Spring98/AST3033/Relativity/GeneralRela
  tivity.htmgt.
• LeDrew, Berry, et al. Science Probe 8 . Toronto
  Nelson, 2007.

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Even More Works Cited

• "Introduction to General Relativity." Physics At
  Florida State University. Florida State
  University. 29 Sept 2007 lthttp//www.physics.fsu.e
  du/Courses/Spring98/AST3033/Relativity/GeneralRela
  tivity.htmgt.
• LeDrew, Berry, et al. Science Probe 8 . Toronto
  Nelson, 2007.
• "Gravity."World Book. "2nd ed". 2004.
• "Gravitational Entropy." ISCID Encyclopedia of
  Science and Philosophy. 2007. International
  Society for Complexity, Information, and Design.
  15 October 2007 lthttp//www.iscid.org/encyclopedia
  /Gravitational_Entropygt.
• Spears , Tom. "Gaping Hole Found in Universe."
  Vancouver Sun. lthttp//www.canada.com/vancouversun
  /story.html?id944bf618-5faf-4af7-ab62-7108bb5dcbb
  ek3114gt.

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Activity!

• Pick up something near you, anything!
• Actually, just use a pencil
• Pick it up.
• Drop it.
• Write me something explaining how the force of
  gravity acted upon that object. Use either
  Newtons theory or Einsteins theory.
• Have fun doing it. (the dropping part)
• Email to me mikecao1993_at_hotmail.com
• If any property is damaged during this procedure,
  it is not the responsibility of Gravity
  PowerPoint Producers Inc. Also, the person held
  responsible for said actions will not be
  prosecuted / persecuted.

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Nice explosion picture brought to you by
http//www.trex2003.de/ gallerie/photos/photo_9.h
tml