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dizzyk
Crew

PostPosted: Thu Aug 09, 2007 7:28 am


Well, if the metal is zinc, the water doesn't even have to be hot.....

We blew the ceiling out of my 8th grade science class throwing zinc into a vat of water!
_____________________________________________________________
"What actually happens in the exploding water case is quite special in that it doesnt work with normal water, but purified water. The water must have very low amounts of impurities.

When water boils, its the impurities such as air, or calcium in it that causes the movement, but if these are removed, theres nothing to agitate the water, and so what happens is the water goes over boiling temperature with no visible effect.

Then you introduce something to it, like a fork or sugar, and this causes the water to instantly boil, violently.

Hence exploding water.

There was a nice mythbusters episode on it."


I don't know yet if this explanation is true... did a search of mythbusters and the explosion you described..... still researching....
PostPosted: Mon Aug 20, 2007 2:37 pm


What topics would be included on a paper titled A History of Physics?
My teacher did not state what was supposed in it. So give me some ideas of where to look.

saphria_eragon
Crew


Jubillie

PostPosted: Wed Aug 22, 2007 9:07 pm


Is it true that Preparation H is good for getting the dark out of under your eyes?!
PostPosted: Thu Aug 23, 2007 7:59 pm


Jubillie
Is it true that Preparation H is good for getting the dark out of under your eyes?!


The cream, not the ointment will help get rid of puffy eyes, it is a minor steroid that decreases swelling- That's why it works on hemorrhoids, too. But don 't get it in your eyes, and it is only a temporary fix, and not a very strong one.

dizzyk
Crew


dizzyk
Crew

PostPosted: Thu Aug 23, 2007 8:03 pm


saphria_eragon
What topics would be included on a paper titled A History of Physics?
My teacher did not state what was supposed in it. So give me some ideas of where to look.


What "grade" level? Jr high, High, college.....?

Here's a place to look for ideas......(but it only goes to the 1960's)

http://physics.eou.edu/history/timeline.html

It has the following:



Pre-1600

3rd century BC - Aristarchus proposes a heliocentric model
~150 Ptolemy publishes Almagest
1054 Chinese and American Indian astronomers observe the Crab supernova explosion
1100s First known written description of the use of lodestone as a compass
1512 Nicholas Copernicus first states his heliocentric theory in Commentariolus
1543 Nicholas Copernicus publishes De Revolutionibus de Orbium Coelestium (On the Revolutions of the Heavenly Spheres)
1572 Tycho Brahe observes the supernova that appears in Cassiopeia
1577 Tycho Brahe uses parallax to prove that comets are distant entities and not atmospheric phenomena
1589 Galileo Galilei uses balls rolling on inclined planes to show that different weights fall with the same constant acceleration

Back to Top

1600s
1609 Johannes Kepler states his first two empirical laws of planetary motion
1609 Galileo Galilei builds his first telescope
1613 Galileo Galilei uses sunspots to demonstrate the rotation of the sun
1619 Johannes Kepler states his third empirical law of planetary motion
1621 Willebrord Snell states his law of refraction
1656 Christian Huygens builds the first highly accurate pendulum clock
1665 Isaac Newton deduces the inverse-square gravitational force law from the acceleration of the moon
1665 Isaac Newton invents his calculus
1668 John Wallis suggests the law of conservation of momentum
1673 Christian Huygens publishes his discovery that ac=v2/R
1675 Ole Romer uses the orbital mechanics of Jupiter's moons to estimate the speed of light
1678 Christian Huygens states his principle of wavefront sources
1684 Isaac Newton proves that planets moving under an inverse-square force law will obey Kepler's laws
1687 Isaac Newton publishes his Principia Mathematica


Back to Top

1700s

1705 Edmond Halley predicts the periodicity of Halley's comet
1752 Benjamin Franklin shows that lightning is electricity
1767 Joseph Priestly proposes an electrical inverse-square law
1781 William Herschel discovers Uranus
1783 John Michell suggests that some objects might be so massive that not even light could escape
1785 Charles Coulomb introduces the inverse-square law of electrostatics
1798 Henry Cavendish measures the gravitational constant and determines the mass of the Earth
1798 Count Rumford has the idea that heat is a form of energy
Back to Top

1800s
1800 Alessandro Volta announces his invention of the electric battery
1801 Thomas Young demonstrates the wave nature of light and the principle of interference
1820 Hans Oersted notices that a current in a wire can deflect a compass needle providing the first concrete evidence of the connection between electricity and magnetism
1820 Within a week after Oersted's discovery reached France, Ampere discovers that two parallel electic currents will exert forces on each other
1821 Michael Faraday builds an electricity-powered motor
1824 Sadi Carnot analyzes heat engines
1826 Simon Ohm states his law of electrical resistance
1827 Robert Brown discovers the Brownian motion
1831 Faraday discovers electromagnetic induction
1848 Lord Kelvin discovers the absolute zero point of temperature
1849 Joule publishes results from his series of experiments (including the paddlewheel experiment) which show that heat is a form of energy
1850 Fizeau and Foucault measure the speed of light in water and find that it is slower than in air, in support of the wave model of light
1859 Maxwell works out the mathematics of the distribution of velocities of the molecules of a gas
1864 James Maxwell publishes his papers on a dynamical theory of the electromagnetic field
1873 James Maxwell states that light is an electromagnetic phenomenon
1874 Lord Kelvin formally states the second law of thermodynamics
1887 Albert Michelson and Edward Morley do not detect the ether drift
1887 Heinrich Hertz discovers the photoelectric effect
1888 Heinrich Hertz discovers radio waves
1896 Antoine Becquerel discovers the radioactivity of uranium
1897 Joseph Thomson discovers the electron
1899 Ernest Rutheford discovers that uranium radiation is composed of positively charged alpha particles and negatively charged beta particles


Back to Top

1900s
1900 Max Planck states his radiation law and Planck's constant
1905 Albert Einstein completes his theory of special relativity
1913 Niels Bohr presents his first quantum model of the atom
1913 Robert Millikan measures the fundamental unit of charge
1915 Albert Einstein completes his theory of general relativity
1927 Werner Heisenberg states the quantum uncertainty principle
1929 Edwin Hubble discovers the expansion of the universe
1932 James Chadwick discovers the neutron
1932 Carl Anderson discovers the positron
1933 Wolfgang Pauli proposes the existence of neutrinos to account for an apparent violation of energy conservation in certain nuclear reactions
1958 Charles Townes invents the laser
1963 Murray Gell-Mann and George Zweig propose the quark/aces model
1965 Arno Penzias and Robert Wilson discover the 3K background radiation
PostPosted: Thu Aug 23, 2007 8:11 pm


This one is maybe better- only the last century.....

http://timeline.aps.org/APS/Timeline/

dizzyk
Crew


Emily`s_Gone_Mad

PostPosted: Thu Aug 23, 2007 8:14 pm


dizzyk
Jubillie
Is it true that Preparation H is good for getting the dark out of under your eyes?!


The cream, not the ointment will help get rid of puffy eyes, it is a minor steroid that decreases swelling- That's why it works on hemorrhoids, too. But don 't get it in your eyes, and it is only a temporary fix, and not a very strong one.


I heard they use that on models?
PostPosted: Sat Aug 25, 2007 3:31 pm


dizzyk
What "grade" level? Jr high, High, college.....?


High School thank you

saphria_eragon
Crew


dizzyk
Crew

PostPosted: Sun Aug 26, 2007 2:59 pm


Emily`s_Gone_Mad
dizzyk
Jubillie
Is it true that Preparation H is good for getting the dark out of under your eyes?!


The cream, not the ointment will help get rid of puffy eyes, it is a minor steroid that decreases swelling- That's why it works on hemorrhoids, too. But don 't get it in your eyes, and it is only a temporary fix, and not a very strong one.


I heard they use that on models?


They do, sometimes. rofl
PostPosted: Sun Aug 26, 2007 3:00 pm


saphria_eragon
dizzyk
What "grade" level? Jr high, High, college.....?


High School thank you

If you can go to the second timeline site I gave you, you can pick lots of things to put in your report, and it should also help you find the info you need. Just click on the bar across the top for that year/decade.

dizzyk
Crew


whateverbloatswiththeboat

PostPosted: Sun Sep 09, 2007 4:44 am


emo i read somewhere in the news paper a thingy that said that older brothers/sisters are smarter with 4 iq points or something than their yourger brothers/sisters...and if the older one dies, the younger one will be as smart as the 1st one...is that possible? O_o...i don't want to kill my older sister (GOD NOT O_O) to get smarter at math...but i was thinking about my best friend's bother: he's,like, 24 and she's 14, and my best friend is smarter than him O_o
PostPosted: Sun Sep 09, 2007 8:00 am


eye_of_water
emo i read somewhere in the news paper a thingy that said that older brothers/sisters are smarter with 4 iq points or something than their yourger brothers/sisters...and if the older one dies, the younger one will be as smart as the 1st one...is that possible? O_o...i don't want to kill my older sister (GOD NOT O_O) to get smarter at math...but i was thinking about my best friend's bother: he's,like, 24 and she's 14, and my best friend is smarter than him O_o

Generally speaking, the older sibling does better in school and is more likely to be an independent thinker. This does not mean it is a rule. Genetics and luck determine which child is going to be higher IQ, but typically parents spend more time and attention on the first child as opposed to the succeeding ones. THEORY has it that that may be why older ones do better. If that is the case, then it might support the idea of the younger one "getting smarter" if the older dies-- The parents then spend more time on the younger one- especially if they are afraid of losing another child. The truth though, is that birth order does not increase IQ or decrease it. Environmental and social aspects of their rearing will help determine whether or not they are going to use the IQ they have.
One exception to the general "rule" : If the parents are much older with successive children, there is a higher chance of down's syndrome as the parents (mother) age.

dizzyk
Crew


Sun Charm
Vice Captain

PostPosted: Tue Sep 25, 2007 6:34 pm


How do plasma TV's work? I know it has to do with mirrors but what is different opposed to standard TV's?
PostPosted: Wed Sep 26, 2007 8:50 pm


Go here for a detailed explanation mrgreen

http://www.plasmatvscience.org/theinnerworkings.html

It even has links at the bottom for other types of tvs mrgreen

dizzyk
Crew


Twilights Lily

PostPosted: Mon Oct 01, 2007 10:17 pm


Yup. It's been a while since I can back to this guild XD
But this has been bugging me for a while....

There are so many people who don't believe in evolution, and I don't see why!
All the evidence is right there! Can some one explain, I know it has got something to do with religon, but still, I can't see why. Please, someone gie me an idea of what's going on in their heads!
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Science and Beyond

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