A Quote by Dmitri Mendeleev
The elements which are the most widely diffused have small atomic weights.
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Probably our atomic weights merely represent a mean value around which the actual atomic weights of the atoms vary within certain narrow limits... when we say, the atomic weight of, for instance, calcium is 40, we really express the fact that, while the majority of calcium atoms have an actual atomic weight of 40, there are not but a few which are represented by 39 or 41, a less number by 38 or 42, and so on.
Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).
[This] may prove to be the beginning of some embracing generalization, which will throw light, not only on radioactive processes, but on elements in general and the Periodic Law.... Chemical homogeneity is no longer a guarantee that any supposed element is not a mixture of several of different atomic weights, or that any atomic weight is not merely a mean number.
Certain characteristic properties of elements can be foretold from their atomic weights.
The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties.
If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity.
When the elements are arranged in vertical columns according to increasing atomic weight, so that the horizontal lines contain analogous elements again according to increasing atomic weight, an arrangement results from which several general conclusions may be drawn.
Experimental work of great refinement is necessary in order to determine atomic weights. No relationships between them have yet been certainly found which make it possible for us to compute by any sort of calculation exactly the value of any one atomic weight from any other.
On the geometric level, we see certain physical elements repeated endlessly, combined in an almost endless variety of combinations. It is puzzling to realize that the elements, which seem like elementary building blocks, keep varying, and are different every time that they occur. If the elements are different every time that they occur, evidently then, it cannot be the elements themselves which are repeating in a building or town; these so-called elements cannot be the ultimate "atomic" constituents of space.
It is remarkable that the elements diffused through the host of stars are some of those most closely connected with the living organisms of our globe.
The ancient Roman code belongs to a class of which almost every civilised nation in the world can show a sample, and which, so far as the Roman and Hellenic worlds were concerned, were largely diffused over them at epochs not widely distant from one another.
The dance in which the men form one row, the women another, and dance with and opposite each other in a form of love play, is widely diffused and may be confidentally assigned to a Protoneolithic culture level.
We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon- whose atomic weight would be between 65 and 75.
The most common and most important result of them is that the nature and size of the effect on corresponding series of different elements are largely an expression of the peculiarity of their atomic structure - or, at least, of the structure of the surface.
Each member of society can have only a small fraction of the knowledge possessed by all, and...each is therefore ignorant of most of the facts on which the working of society rests...civilization rests on the fact that we all benefit from knowledge which we do not possess. And one of the ways in which civilization helps us to overcome that limitation on the extent of individual knowledge is by conquering intelligence, not by the acquisition of more knowledge, but by the utilization of knowledge which is and which remains widely dispersed among individuals.
Most of the time I meet my trainer at the gym and we do a lot of everything: weights circuit with cardio, football drills, sprinting with weights on the treadmill.
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