Search over 35,000 Quotes

Love Quotes Images

love quotes images biography
During the course of my research, I had had occasion to examine not only simple compounds, salts and oxides, but also a great number of minerals. Certain ones proved radioactive; these were those containing uranium and thorium; but their radioactivity seemed abnormal, for it was much greater than the amount I had found in uranium and thorium had led me to expect.
This abnormality greatly surprised us. When I had assured myself that it was not due to an error in the experiment, it became necessary to find an explanation. I then made the hypothesis that the ores uranium and thorium contain in small quantity a substance much more strongly radioactive than either uranium or thorium. This substance could not be one of the known elements, because these had already been examined; it must, therefore, be a new chemical element.
I had a passionate desire to verify this hypothesis as rapidly as possible. And Pierre Curie, keenly interested in the question, abandoned his work on crystals (provisionally, he thought) to join me in the search love quotes images for this unknown substance.
We chose, for our work, the ore pitchblende, a uranium ore, which in its pure state is about four times more active than oxide of uranium. Since the composition of this ore was known through very careful chemical analysis, we could expect love quotes to find, at a maximum, 1 per cent of new substance. The result of our experiment proved that there were in reality new radioactive elements in pitchblende, but that their proportion did not reach even a millionth per cent! (Marie Curie, from Pierre Curie pp. 96-98)

Over several years of unceasing labour they refined several tons of pitchblende, progressively concentrating the radioactive components, and eventually isolated initially the chloride salts (refining radium chloride on 20 April 1902) and then two new chemical elements. The first love quotes images they named polonium after Marie's native country, and the other was named radium from its intense radioactivity. Other scientists did not trust the announcement, for the Curies did not have enough polonium and radium to see and weigh. The elements’ existence was known from nothing but their radioactivity. The Curies would have to separate their elements from the other substances they were mixed with. The storeroom at Pierre’s school was too small for such work, and the Curies continued their work in an abandoned shed nearby.
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images
love quotes images

web counter

Labels Cloud

50 most Inspiratioal Quotes to Lift you up beautiful heart pictures beautiful heart tattoos beautiful heart wallpapers birthday quotes brainy quotes Christian Quotes edm quotes tumblr Emo love quotes biography famous love quotes father day quotes free live world cup 2015 quotes online free mobile quotes wallpaper friendship quotes girlfriend quotes Great Quotes About Love happy new year 2015 wallpapers quotes hd quotes wallpapers heart wallpaper heart wallpapers for desktop heartbreak quotes Heartbreak quotes for when you really need them i love you heart wallpaper quotes i love you quotes for him i miss you pictures i miss you so much i miss you so much quotes inspirational love sayings Inspirational quotes love heart quotes love heart wallpaper love heart wallpaper background love heart wallpapers love hurts quotes wallpapers love images quotes love images quotes tumblr love is life quotes love quotes love quotes and poems love quotes and sayings love quotes for her love quotes for him tagalog love quotes for valentines day love quotes for wedding love quotes heart love quotes images love quotes in hindi Love Quotes Pics For Girls love quotes tagalog love quotes tumblr love quotes wallpaper for mobile love quotes wallpapers love quotes wallpapers photos love sayings Love Wallpaper Sad Quote Lovely Love Quotes Pictures loving life quotes loving wallpapers loving you quotes merry christmas quotes mobile quotes wallpaper Most Beautiful Love Quotes Photos most inspirational quote mother day quotes in english motivational quotes moving away quotes moving on quotes pinterest love quotes quote quote of the love Quotes About Amazing Love quotes about being single quotes about darkness quotes about happiness quotes about strength quotes about trust quotes on life in urdu reading quotes for kids redirect love quotes for him relationship quotes retirement quotes Romantic Love Sayings romantic wallpaper quotes sad love quotes and poems sad love quotes for him sad quotes tumblr sad wife quotes sad words quotes wallpapers sexy love quotes for her biography sympathy quotes thank you quotes The World Love Drawings touching love quotes urdu loving quotes veterans day quotes walt disney quotes whatsapp quotes on attitude witty quotes words of encouragement zombie quotes