Pahu78@gmail.com
02-27-2008, 08:48 AM
Poynting-Robertson Effect
Dust particles larger than about a 100,000th of a centimeter in
diameter form a large disk-shaped cloud that orbits the Sun between
the orbits of Venus and the asteroid belt. This cloud produces
zodiacal light. Forces acting on these particles should spiral most of
them into the Sun in less than 10,000 years. (This is called the
Poynting-Robertson effect.) Known forces and sources of replenishment
cannot maintain this cloud, so the solar system is probably less than
10,000 years old.
This is how the Poynting-Robertson effect works: Rain falling on a
speeding car tends to strike the front of the car and slow it down
slightly. Similarly, the Sun's rays that strike particles orbiting the
Sun tend to slow them down, causing them to spiral into the Sun. Thus,
the Sun's radiation and gravity act as a giant vacuum cleaner that
pulls in about 100,000 tons of nearby micrometeoroids per day.
Disintegrating comets and asteroids add dust at less than half the
rate at which it is being destroyed (a).
A disintegrating comet becomes a cluster of particles called a meteor
stream. The Poynting-Robertson effect causes smaller particles in a
meteor stream to spiral into the Sun more rapidly than larger
particles. After about 10,000 years, these orbits should be visibly
segregated by particle size. Because this segregation is generally not
seen, meteor streams are probably a recent phenomenon (b).
Huge quantities of microscopic dust particles also have been
discovered around some stars (c). Yet, according to the theory of
stellar evolution, those stars are many millions of years old, so that
dust should have been removed by stellar wind and the Poynting-
Robertson effect. Until some process is discovered that continually
resupplies vast amounts of dust, one should consider whether the
"millions of years" are imaginary.
a. Steidl, The Earth, the Stars, and the Bible, pp. 60-61.
Harold S. Slusher and Stephen J. Robertson, The Age of the Solar
System: A Study of the Poynting-Robertson Effect and Extinction of
Interplanetary Dust, ICR Technical Monograph No. 6, revised edition
(El Cajon, California: Institute for Creation Research, 1978).
b. Stanley P. Wyatt Jr. and Fred L. Whipple, "The Poynting-Robertson
Effect on Meteor Orbits," The Astrophysical Journal, Vol. 3, January
1950, pp. 134-141.
Ron Cowen, "Meteorites: To Stream or Not to Stream," Science News,
Vol. 142, 1 August 1992, p. 71.
c. David A. Weintraub, "Comets in Collision," Nature, Vol. 351, 6 June
1991, pp. 440-441.
For the last 150 years, the age of the Earth, as assumed by
evolutionists, has been doubling at roughly a rate of once every 15
years. In fact, since 1900 this age has multiplied by a factor of
100!
Evolution requires an old Earth, an old solar system, and an old
universe. Nearly all informed evolutionists will admit that without
billions of years their theory is dead. Yet, hiding the "origins
question" behind a vast veil of time makes the unsolvable problems of
evolution difficult for scientists to see and laymen to imagine. Our
media and textbooks have implied for over a century that these almost
unimaginable ages are correct. Rarely do people examine the shaky
assumptions and growing body of contrary evidence. Therefore, most
people today almost instinctively believe that the Earth and universe
are billions of years old. Sometimes, these people are disturbed, at
least initially, when they see the evidence.
Actually, most dating techniques indicate that the Earth and solar
system are young--possibly less than 10,000 years old.
http://www.creationscience.com/
Dust particles larger than about a 100,000th of a centimeter in
diameter form a large disk-shaped cloud that orbits the Sun between
the orbits of Venus and the asteroid belt. This cloud produces
zodiacal light. Forces acting on these particles should spiral most of
them into the Sun in less than 10,000 years. (This is called the
Poynting-Robertson effect.) Known forces and sources of replenishment
cannot maintain this cloud, so the solar system is probably less than
10,000 years old.
This is how the Poynting-Robertson effect works: Rain falling on a
speeding car tends to strike the front of the car and slow it down
slightly. Similarly, the Sun's rays that strike particles orbiting the
Sun tend to slow them down, causing them to spiral into the Sun. Thus,
the Sun's radiation and gravity act as a giant vacuum cleaner that
pulls in about 100,000 tons of nearby micrometeoroids per day.
Disintegrating comets and asteroids add dust at less than half the
rate at which it is being destroyed (a).
A disintegrating comet becomes a cluster of particles called a meteor
stream. The Poynting-Robertson effect causes smaller particles in a
meteor stream to spiral into the Sun more rapidly than larger
particles. After about 10,000 years, these orbits should be visibly
segregated by particle size. Because this segregation is generally not
seen, meteor streams are probably a recent phenomenon (b).
Huge quantities of microscopic dust particles also have been
discovered around some stars (c). Yet, according to the theory of
stellar evolution, those stars are many millions of years old, so that
dust should have been removed by stellar wind and the Poynting-
Robertson effect. Until some process is discovered that continually
resupplies vast amounts of dust, one should consider whether the
"millions of years" are imaginary.
a. Steidl, The Earth, the Stars, and the Bible, pp. 60-61.
Harold S. Slusher and Stephen J. Robertson, The Age of the Solar
System: A Study of the Poynting-Robertson Effect and Extinction of
Interplanetary Dust, ICR Technical Monograph No. 6, revised edition
(El Cajon, California: Institute for Creation Research, 1978).
b. Stanley P. Wyatt Jr. and Fred L. Whipple, "The Poynting-Robertson
Effect on Meteor Orbits," The Astrophysical Journal, Vol. 3, January
1950, pp. 134-141.
Ron Cowen, "Meteorites: To Stream or Not to Stream," Science News,
Vol. 142, 1 August 1992, p. 71.
c. David A. Weintraub, "Comets in Collision," Nature, Vol. 351, 6 June
1991, pp. 440-441.
For the last 150 years, the age of the Earth, as assumed by
evolutionists, has been doubling at roughly a rate of once every 15
years. In fact, since 1900 this age has multiplied by a factor of
100!
Evolution requires an old Earth, an old solar system, and an old
universe. Nearly all informed evolutionists will admit that without
billions of years their theory is dead. Yet, hiding the "origins
question" behind a vast veil of time makes the unsolvable problems of
evolution difficult for scientists to see and laymen to imagine. Our
media and textbooks have implied for over a century that these almost
unimaginable ages are correct. Rarely do people examine the shaky
assumptions and growing body of contrary evidence. Therefore, most
people today almost instinctively believe that the Earth and universe
are billions of years old. Sometimes, these people are disturbed, at
least initially, when they see the evidence.
Actually, most dating techniques indicate that the Earth and solar
system are young--possibly less than 10,000 years old.
http://www.creationscience.com/