- #1,051
Moonbear
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Magnetic stir bar/stir plate?
But every chemistry lab has one (I hope)! I'm running out of ideas. Can you tell us whether it was an idea or a physical object?dextercioby said:No offense,but the fire extinguisher didn't quite revolutionize chemistry.:rofl:
Daniel.
dextercioby said:Moonbear,as i said,it's not a technical question.You needn't be a chemist,or a math girl to answer it correctly.
Daniel.
This clue bothers me. Both lye and acid were in use pre-Gutenberg. The Chinese had also invented gunpowder well before Gutenbergdextercioby said:They hadn't discovered corrosive substances,nor dangerous gases which might blow up.Daguerre was not born. And Gutenberg had already died.
zoobyshoe said:This clue bothers me. Both lye and acid were in use pre-Gutenberg. The Chinese had also invented gunpowder well before Gutenberg
I think we may have a clue-writing impaired person on our hands.brewnog said:Me too, I was a bit confused about the explosive gases thing.
zoobyshoe said:I think we may have a clue-writing impaired person on our hands.
That settles that. We do have a clue-writting impaired person on our handsdextercioby said:Hold on,that was not a clue. Need i spell:CLUE everytime i want to write something...?
Cork bottle stopper?dextercioby said:It's an object and this guy though of using it in his chemistry experiments.The gesture would be using it to ****** the g******* (curse) things...
Moonbear said:Analytical balance?
I googled it.dextercioby said:Yes.The Scottish guy did it. Where & how did you find it?
Daniel.
Balances had been constructed long before the theory of levers was completely understood. The balance with a pointer on arms of equal length and weights (instruments 14 to 16) comes from ancient times. From the third century BC it competed with the "Roman" balance which had a sliding pointer on a graduated shaft (instruments 18 and 19). The two kinds are known as drop-pan balances since the pans are below the pointer. It was Gilles Personne de Roberval who, in 1669, devised a balance with raised pans, kept horizontal by an articulated parallelogram. It was not until the 19th century, however, that Roberval's balance became widely used in shops and homes.
No Moonbear guessed what it was. MB, take it away.Gokul43201 said:Oops...Black, it was , eh ? Nevermind. Evo's up.
Evo, if you have a clue ready, you can take this one.Evo said:Joseph Black 1754
I had thrown scales & balances out as an answer because they've been around long before BC, but Dex is correct as far as being revolutionary to chemistry.Moonbear said:Hmmm...are you sure about the invention of balances?
I found this site http://www1.fis.uc.pt/museu/mecclsing.htm that says this: