E=mc2(b14)...

[Last Real Burner]

Heard any good theories lately?

quantumly,
mr smith

[Last Real Burner]

Two Quantum Phyisist walk into a bar. The first Quantum Phyisist say's to the other, "You didn't see it either, huh?"

[Last Real Burner]

If science is correct, god can be reduced to a formula.

[III]

>If science is correct, god can be reduced to a formula

how's that? ever since laplacian determinism was replaced by wave theory there has been plenty fo room for non-deterministic behavior...

[Wind_Borne]

If science is correct, god can be reduced to a formula.

OK. Sit back with a nice glass of wine. Picture all the stars in heaven, and all the galaxies comprising those stars, and clusters of galaxies comprising those, out to the limits of the observable universe. Now imagine this universe beginning billions of years ago as a bright flash, evolving to its current form, and extending into the future for billions of years. Just sit and try to get your mind around the scope of the thing. And then wonder "Why?"

Science explains how. Why is a whole other problem.


BTW, the above exercise works well on the playa out near the trash fence at 4:00 am.

[Isotopia]

OK. Sit back with a nice glass of wine. Picture all the stars in heaven, and all the galaxies comprising those stars, and clusters of galaxies comprising those, out to the limits of the observable universe. Now imagine this universe beginning billions of years ago as a bright flash, evolving to its current form, and extending into the future for billions of years. Just sit and try to get your mind around the scope of the thing. And then wonder...

And you have the rudiments for next year's BM theme.

Seriously.

Larry announced it this evening and the above fits into the idea very well.

Stay tuned.

[Wind_Borne]

Isotopia,

I just saw something about that. Cool.

[Last Real Burner]

And then wonder "Why?"


God sneezed, maybe?

[Last Real Burner]

I got one word for you "Propagated High Frequency Wave Propulsion"



"If you seen one brane you've seen um all!"

theorically,
mr smith

[Last Real Burner]

= God

would be a good place to start.


parallelaly,
mr smith

[Last Real Burner]

Opps, Sorry

= God

There, that's better! (boy, some people can't let a little spacial quantum differential slide)


"The more things change the more they stay the same."
quadraphenially,
mr smith

[III]

the distance formula, the quadratic formula, and the equationn for a straight line is god?

my spirituality is a little bit more complex than circles, parabolas and lines. at least throw some cubic splines in there

[SED]

That formula looks suspisciously like what Jerry Garcia did to my head back in '89.

Sorry, I should have posted that in the What's Your Problem thread.

[stuart]

what about non-uniform rational b-splines? They often rule my existance.

[Markov Chaney]

I personally prefer nondegenerate elliptic curves, but to each their own.

[III]

btw - i've gotta say i've long appreciated yer name, markov. i bet you always know where you're going, huh?

[alice]

ah - the math and science geek thread.....

thanks guys, i really missed this one.

[Markov Chaney]

Depends on where I'm at.

[Raheer]

Descartes is walking through the streets of Paris when he is approached by the ugliest woman he has ever seen. She turns to him and says, 'Will you make love to me for five francs?' He responds, 'I think not!', and poof, he disappears!

Raheer

[Last Real Burner]

(b14)

14 higher dimensions variable, at last count. (according to the brane theory)


"I thought you knew"
softly,
mr smith

[Last Real Burner]

Can't seem to get branes off my brains.


"On a subatomic level it is impossible to pinpoint things down to an infinite precision."

bosonally,
mr smith

[foamin' at the mouth]

"On a subatomic level it is impossible to pinpoint things down to an infinite precision."

Maybe stick with Newton then?

[Lydia Love]

i love foam!

[Last Real Burner]

A true one-dimensional atomic system, consisting of a Bose Einstein condensate (BEC) of rubidium atoms pulled out into a thin tubelike shape, has been experimentally demonstrated for the first time, in the ETH lab in Zurich.

"I'm always getting my "quantum wires" crossed"
one dimensionally,
mr smith

[enthropic]

Do you know what the Enthropic Princable is?

[Don Muerto]

Do you know what the Enthropic Princable is?

I think you mean "Entropy Principle."

I prefer the Victoria Principal myself.

[Last Real Burner]

Do you know what the Enthropic Princable is?

You lying naked on the playa with a camera rolling?

"QuasiPsuedo - Another way to state "my cat's breath smells like cat food."
serindipishly,
mr smith

[foamin' at the mouth]

rubidium atoms pulled out into a thin tubelike shape

Hmmn Rubidium's schematic is very pretty, prettier than smilies:



And according to this useful and a bargain. Planning on a little space flight, eh Mr Smith?

Electron Configuration:
[Kr]5s1
History (L. rubidus, deepest red) Discovered in 1861 by Bunsen and Kirchoff in the mineral lepidolite by use of the spectroscope.)

Sources

The element is much more abundant than was thought several years ago. It is now considered to be the 16th most abundant element in the earth's crust. Rubidium occurs in pollucite, leucite, and zinnwaldite, which contains traces up to 1%, in the form of the oxide. It is found in lepidolite to the extent of about 1.5%, and is recovered commercially from this source. Potassium minerals, such as those found at Searles Lake, California, and potassium chloride recovered from the brines in Michigan also contain the element and are commercial sources. It is also found along with cesium in the extensive deposits of pollucite at Bernic Lake, Manitoba.

Properties

Rubidium can be liquid at room temperature. It is a soft, silvery-white metallic element of the alkali group and is the second most electropositive and alkaline element. It ignites spontaneously in air and reacts violently in water, setting fire to the liberated hydrogen. As with other alkali metals, it forms amalgams with mercury and it alloys with gold, cesium, sodium, and potassium. It colors a flame yellowish violet. Rubidium metal can be prepared by reducing rubidium chloride with calcium, and by a number of other methods. It must be kept under a dry mineral oil or in a vacuum or inert atmosphere.

Isotopes

Twenty four isotopes of rubidium are known. Naturally occurring rubidium is made of two isotopes, 85Rb and 87Rb. Rubidium-87 is present to the extent of 27.85% in natural rubidium and is a beta emitter with a half-life of 4.9 x 1010 years. Ordinary rubidium is sufficiently radioactive to expose a photographic film in about 30 to 60 days. Rubidium forms four oxides: Rb2O, Rb2O2, Rb2O3, Rb2O4.


Uses

Because rubidium can be easily ionized, it has been considered for use in "ion engines" for space vehicles; however, cesium is somewhat more efficient for this purpose. It is also proposed for use as a working fluid for vapor turbines and for use in a thermoelectric generator using the magnetohydrodynamic principle where rubidium ions are formed by heat at high temperature and passed through a magnetic field. These conduct electricity and act like an amature of a generator thereby generating an electric current. Rubidium is used as a getter in vacuum tubes and as a photocell component. It has been used in making special glasses. RbAg4I5 is important, as it has the highest room conductivity of any known ionic crystal. At 20oC its conductivity is about the same as dilute sulfuric acid. This suggests use in thin film batteries and other applications.
Cost

The present cost in small quantities is about $25/g.

[Last Real Burner]

doing a little strip mining, trying to get a little gas to get home.

"Burning Man is first Contact!"

[Kr]3s2 ,
mr smith

[Last Real Burner]

Do you know what the Enthropic Princable is?

Since you feel you are the resident brain answer these simple questions?

Note: These questions are from an old test I aced in a 7th grade Science class during the Gifted Students Program at SMU Dallas.



1. Which element has the following electron configuration:
(1s2)(2s2)(2p6)(3s2)(3p6)(4s2)(3d10)(4p5)

a) Br
b) Se
c) Cl
d) Ar


2. The ground state electron configuration of Zn is:

a) [Kr](3s2)(2d10)
b) [Ar](4s2)(3d10)
c) [Ar](3s2)(2d10)
d) [Ar](3s2)(3d10)


3. Which of the following gives the correct order for atomic radii from smallest to largest?

a) Ar < Si < P < K < Cs
b) Cs < K < P < Si < Ar
c) Cs < K < Ar < P < Si
d) Ar < P < Si < K < Cs

4. The atomic radius generally increases down a group because ___

a) the number of protons increases.
b) the number of protons decreases.
c) the principle quantum number of the valence orbitals increases.
d) the number of valence electrons increases.

5. Which of the following elements has the largest second ionization energy (IE2)?

a) Ca
b) K
c) Ga
d) Ge

6. Which of the following elements has the most negative electron affinity (EA)?

a) P
b) Al
c) Si
d) Cl


7. The oxide of which element can react with nitric acid?

a) sulfur, S
b) selenium, Se
c) nitrogen, N
d) iron, Fe


8. Predict the product for the reaction: Na2O (s) + 2HCl (aq)

a) 2NaOH (aq) + Cl2 (g)
b) 2Na (s) + H2 (g) + O2 (g)
c) 2NaCl (aq) + H2O (l)
d) 2Na (aq) + H2OCl2 (aq)


9. How many electrons are in p-orbitals in an arsenic (As) atom?

a) 3
b) 9
c) 15
d) 33


10. Diamagnetic elements are defined as having no unpaired electrons. Which of the following elements is expected to have a diamagnetic ground state?

a) Ca
b) Sc
c) Br
d) C


11. Which of the following is not a typical property of metals?

a) high thermal conductivity
b) lustrous
c) form acidic oxides
d) form cations


12. Which of the following terms corresponds to "the change in energy when an electron is added to an isolated gaseous atom to form an anion with -1 charge."

a) ionization energy
b) electronegativity
c) electron affinity
d) lattice energy


13. Which of the following does not apply to covalent bonds?

a) they can be polar or non-polar
b) the two elements in the bond are usually both non-metals
c) they are described by a "sea if electrons" model
d) they are the result of sharing of electrons between two bonded atoms


14. How many valence electrons does indium, In have?

a) 1
b) 3
c) 13
d) 49


15. Based on the octet rule, how many H atoms would you expect would normally bond with selenium when forming SeHx?

a) x = 1
b) x = 2
c) x = 3
d) x = 4


16. Which of the following ionic compounds is expected to have the largest lattice energy?

a) CsI
b) BaI2
c) KCl
d) MgO


17. Which series does not correctly order the size of the species (with largest on the left)?

a) Sb > As > N
b) O > Be > Li
c) N-3 > O-2 > Na+
d) Cs+ > Rb+ > K+


18. Wich of the following solids are composed of both both ionic and covalent bonds

a) KCl
b) CaF2
c) PF3
d) NH4Cl


19. Which of the following molecules has the most polar covalent bond?

a) O2
b) FCl
c) FI
d) I2


## 20. Which of the following compounds is expected to be unstable? (hint: determine the number of valenceelectrons available for bonding)

a) SF2
b) SF3
c) SF4
d) SF6


## 21. Based on its Lewis dot structure, how man lone pairs does the central atom in SF4-2 have?

a) 0
b) 1
c) 2
d) 3


22. Which of the following compounds would best be described by a resonance structure?

a) CO2
b) SO4-2
c) N2
d) CO3-2


23. Calculate the formal charge on the phosphorus atom in PF3.

a) 0
b) 1
c) 2
d) 3


## 24. Which of the following compounds is most likely a radical (has an odd number of electrons)?

a) CN-
b) O3
c) NO
d) BeF2


## 25. Estimate H for the following reaction: 2HBr(g) H2(g) + Br2(g)

Useful Bond Enthalpies

H-Br 
366 kJ/mol
H-H
436 kJ/mol
Br-Br
193 kJ/mol




a) -143 kJ
b) -103 kJ
c) +103 kJ
d) +143 kJ


"What a waste it is to lose one's mind. Or not to have a mind is being very wasteful. How true that is." - Former U.S. Vice-President Dan Quayle at a fundraising event for the United Negro College Fund. (He was attempting to quote the line "a mind is a terrible thing to waste".)

times up,
mr smith