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Articles related to "Gravitational Forces"
Newton's Laws for Kids - Gravity Isaac Newton discovered three laws of motion and the law of gravity to explain motions observed on Earth and in space. Gravity acts between everything in the Universe. newton's laws for kids • gravity • gravitational force • newton's law of gravity • isaac newton
Einstein's General Relativity Einstein's general theory of relativity expanded on the special theory, explained gravity, and predicted phenomena such as black holes and the expanding universe. einstein • general relativity • theory of relativity • gravity • principle of equivalence
An Introduction to Accelerometers Accelerometers allow engineers to measure the accelerations in bodies and systems to ensure safety and proper operation, but can also be found in everyday objects. accelerometer • measuring acceleration • type of accelerometer • use for accelerometer • accelerometer in airbag
Newton's Laws for Kids - Third Law Isaac Newton discovered three laws of motion and the law of gravity that explain motions observed on Earth and in space. The third law deals with actions and reactions. newton's laws for kids • newton's third law • action reaction pairs • gravity • force
Understanding Mass An object's mass is a constant inherent property that measures the amount of matter. An object's mass is related to its inertia and gravitational force. mass • physics • gravitational force • inertia • kilogram
Understanding Mass and Weight Mass and weight are related but distinctly different properties of an object. Mass is an inherent property; weight is the gravitational force acting on an object. mass • weight • acceleration due to gravity • physics • gravitational force
Why Do Earth & Planets Orbit Sun? With his laws of motion and gravity Newton resolved the heliocentric vs. geocentric controversy and explained what causes orbits. newton's laws • gravitational force • gravity • orbits • earth's orbit
Newton's Laws for Kids - Overview Isaac Newton discovered three laws of motion and the law of gravity that explain motions observed on Earth and in space. newton's laws for kids • newton's first law • newton's second law • newton's third law • action reaction pairs
Black Holes Space/Time Distortion Like sharks in the ocean millions of Black Holes wander the universe. And like those creatures the universe needs these galactic wanders to maintain stability. black hole • event horizon • stellar mass • photon sphere • super nova
Why Are Astronauts Weightless There is a myth that there is no gravity in space, so astronauts are weightless. Orbiting astronauts are weightless because they are falling freely around the Earth. free fall • weightless • astronauts • gravity • space
Falling into Black Holes What would happen to Earth's orbit around the Sun, if the Sun were to suddenly collapse into a black hole? black hole • sun • collapse • orbit • gravitational
Feeding Black Holes Like the footsteps in the snow of an invisible man, feeding black holes are easily seen black holes • accretion disk • bipolar jets • megnetic fields • gravitational force
Is the Universe Expanding NASA proves the existence of Dark Matter. Scientific observations indicate the universe is infinitely expanding and quite open. expanding universe • big bang • dark matter • big crunch • big rip
The Circle of Life The Beginning "We are made of star stuff...atoms heavier than hydrogen were created in the interiors of stars and then expelled into space to be incorporated into later stars." star-stuff • nebula • nuclear fusion • size of stars • gravitational forces
Simulation of Collisional and Collisionless Matter This article discusses methods for combining collisional and collisionless matter simulation. simulation • astrophysical • collisional • collisionless • particle-mesh
Comet Enke – A Threat To Earth? Is Comet Enke and the Taurid Meteor Shower that caused the Tunguska Event in 1908 on an inevitable second collision course with Earth? comet enke • threat to earth • history comet enke • short period comet • strike earth
Quality Watering Techniques Selection of a quality growing media and good potting techniques are the backbone in the production of quality bedding plants. What may not be so obvious, however, is that the why a growing media is watered can have profound influences on the final result. That plants need water to survive may not be a big surprise, but how to water, and how to avoid overwatering are techniques which must be learned. If you are not familiar with physical properties of water, such as cohesion, adhersion, and capillary action then this article is for you. watering • techniques • cohesion • adhesion • capillary
Silicon and Astronomy II A brief account of the impact of computers on theoretical cosmology computers in astronomy • data processing
Black Holes, What are They? Black holes are stars collapsed to the point that nothing, not even light can escape. black hole • escape velocity • relativity • speed of light • schwarzschild radius
Quick Magnetism Experiments Opening the door to an exciting magnetism study! magnetism • magnets • magnet • science • experiment
Shepherd Moons & Planetary Rings The Voyager space probe to Saturn revealed incredibly detailed unexpected structure in Saturn's rings. Shepherd moons help cause this structure. saturns rings • rings of saturn • saturn moons • shepherd moons • guardian satellites
The Circle of Life The End As with all life in the Cosmos, the ending depends largely on the life that was led. death of stars • super nova • red giants • nuclear fuel • gravitational collapse
Tides and Volcanoes on Io The same effects that cause ocean tides also cause Io to be the most volcanically active world in the solar system. io • tides • tidal effect • volcanic activity • volcanoes
Understanding Kepler's Third Law Kepler's third law of planetary motion is a mathematical relation between orbital periods and distances. It allows astronomers to measure masses of celestial objects. planetary motion • kepler • kepler's laws • cosmos • tycho brahe
What Are Hadrons Protons and other types of hadrons interact via the strong nuclear force. Hadrons are further classified into mesons and baryons. hadron • subatomic particles • high energy particle physics • large hadron collider • lhc
How Can the Moon Affect Tides? Ever wonder why the tides are higher at certain times of the month and year? boats • boating • boating education • sailing • tides
Dark Matter Dark matter has long remained elusive, but recent evidence suggests that it does exist, making up most of the matter in the universe. But what is it? dark matter • macho • machos • wimp • wimps
Rocheworld: Weather in a Double Planet System Analyzing a planet's weather also is in large part analyzing its identity, yet is often ignored in settings for space-related science fiction novels. rocheworld • rocheworld weather • weather in sci-fi • true science sci-fi • robert forward
What Are Leptons Leptons are a class of elementary subatomic particles, which includes electrons and neutrinos, that interact via the weak nuclear force. lepton • subatomic particles • particle physics • elementary particles • hadron
Galactic Mergers in the Universe Though it's a hefty two billion years away, the future event that has astronomers buzzing is the expected galactic merger of the Milky Way and the spiral Andromeda Galaxy milky way • andromeda galaxy • evolution of galaxies • galactic collisions • galaxy
Simple Harmonic Motion Simple harmonic motion is the oscillatory motion of springs, pendulums, and other devices that have a restoring force proportional to the displacement. simple harmonic motion • physics • spring • pendulum • hooke's law
Sure Your Toddler Can Read, But Can He Milk a Cow? Even without the learning toys, developmental information, and educational play, kids grow up just fine. But a little information can sure make it easier on parents. babies • toddlers • preschoolers • children • parenting
Vegetable Gardening by the Moon Plant by the age old method of sowing by the phases of the moon and have a bumper crop this year. astrological planting • planting by the moon • gardening by the moon • astrological gardening • phase of the moon
Archimedes' Principle Historical legend says Archimedes discovered the principle of buoyant force in a fluid while trying to tell if a crown was solid gold. archimedes's principle • archimedes • buoyant force • buoyancy • density floating
Astronomical Clustering of Stars Stars cluster together in groups ranging from binary star systems to galactic and globular clusters of stars and at larger scales galaxies and clusters of galaxies. stars • star clusters • open clusters • galactic clusters • globular clusters
Black Hole or Neutron Star Measuring the mass of the unseen companion in a binary X-ray source, such as Cygnus X-1, tells us if it is a black hole or a neutron star. cygnus x-1 • x-ray astronomy • astronomical x-rays • black hole • hde226868
Black Hole Singularity Inside the event horizon or Schwarzschild radius of a static isolated black hole the mass of the collapsed star is compressed into a singularity point. black holes • singularity • schwarzschild radius • event horizon • naked singularity
Energy and Power in Physics In physics power is the rate at which energy is used or work is done. The average power is the energy divided by the time. power energy • kinetic energy • potential energy • work energy • physics
Exercises That Could Be Dangerous Many injuries sustained while working out could be eliminated if exercisers realized that some exercises demand special attention. exercise safety • high risk exercises • precautions during exercise • correct weight lifting technique • dangerous exercises
Introduction to Magnetism An introduction to magnetism! magnetism • magnets • magnet • science • experiment
Jupiter's Galilean Moons What are the properties of Jupiter's four largest Moons, the Galilean Moons: Io, Europa, Ganymede, and Callisto? galilean moons • moons of jupiter • io • europa • ganymede
Kepler's Laws of Planetary Motion Using Tycho Brahe's laboriously collected data on planetary positions Johannes Kepler discovered three laws of planetary motion and revolutionized astronomy. planetary motion • kepler • kepler's laws • cosmos • tycho brahe
Multiple and Binary Star Systems Most stars are actually binary stars or multiple star systems. The classifications include visual binaries, eclipsing binaries, and spectroscopic binaries. binary stars • stars • binary star systems • eclipsing binaries • spectroscopic binaries
Prehistoric Liechtenstein Liechtenstein's history of settlement goes back to at least 5000 BC. liechtenstein • prehistoric • rhine • alps • mauren
Saturn's Ring System Saturn has the most extensive and beautiful ring system of any planet in the solar system. saturns rings • rings of saturn • voyager mission • saturn nasa • shepherd satellites
The Mathematics of Black Holes How massive does an object have to be in order to be transformed into a black hole? There is a very simple way to find this out using a standard algebraic equation. schwarzschild radius • black holes • albert einstein • general relativity • escape velocity
Understanding Potential Energy Potential energy is the energy of position resulting from any conservative force. kinetic energy • potential energy • work energy • hooke's law • electrical potential energy
Weight of Earth's Atmosphere A calculation of the weight of Earth's atmosphere using the atmospheric pressure at sea level, Earth's radius, and an understanding of the physics of pressure. atmospheric pressure • physics • force • weight • earth's atmosphere
1989 San Francisco Earthquake A television broadcast of the World Series at Candlestick Park in San Francisco quickly became a live news report of an earthquake. 1989 san francisco earthquake • loma prieta or world series earthquake • television broadcast world series candlestick par • october 17 • 1989 at 5:04pm local time earthquake surface magni
Andromeda the Milky Way versus Sol The question itself raises other questions. How old is the sun and how long will it live? How far away from each other are the two galaxies and how fast do they travel? galactic collisions • milky way • andromeda • sun explodes • cox & loeb |
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