Thursday
November 27, 2014

Posts by Kurst


Total # Posts: 17

Chem
Then why does the new silicon kilogram prototype need to be made out of pure isotope silicon-28?
March 18, 2008

Chem
Does the lattice constant of a unit cell vary over isotopes? e.g Si 28 and Si 29
March 18, 2008

French
what do the phrases "Je veux me battre" and "voulu mettre ton destin à genou" (there not related).?
March 17, 2008

Chinese
Do you know any good, free audio dictionary-type websites that speack chinese?
March 17, 2008

Physics
Then, in the light intensity equation E=L/r^2, where E is illumination, L is luminous intensity and r is distance, what are the units of each factor?
March 15, 2008

Physics
Does one Candela (SI Unit for lumious intesnity) = lumens per metre squared, i.e. 1 Cd = 1 lum/m^2 if not, what is the relationship between candela and lumens?
March 15, 2008

German
HOw would I say "Dear son" and "Love from" in German?
March 14, 2008

physics
do converging/diverging lenses work because of refraction?
March 12, 2008

French
When would one use the term ressentir as opposed to sentir?
March 12, 2008

Astronomy/History
I am doing a project on Isaac Newton. Ive looked at his impact on the development of the telescope, in particular, the reflecting telescope. Ive researed this a bit and have found conflicting dates. Some sources say he built the first relflecting telescope in 1671 but others ...
March 8, 2008

religion
the sacred scriptures is more than a pile of old stories. Any websites you can give me to help with this?
March 6, 2008

french
translate this Le bonheur ici bas n'a pas de prix Am I right in saying"happiness here doesn't have a price". If not, what is the translation and two, what does "bas" mean in this context?
March 1, 2008

Chemistry
Sorry - are you being sarcastic or serious (its a bit hard to tell from text)
February 29, 2008

Chemistry
Then, do isotopes have different atomic radii? since they all have different numbers of neutrons. Even if they only differ by 10^-23 m, there is still some diff right?
February 29, 2008

Chemistry
With isotopes, is it fair to say that each isotope has a slightly differnent volume due to the differing numbers of neutrons in the nucleus? i.e. carbon-12 is slightly smaller in volume than carbon-13. If not, why?
February 29, 2008

Chem history
Why was carbon chosen over silicon in defining the mole?
February 25, 2008

French
How many ways and what are that in to say "that" in french?
February 23, 2008

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