No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments.
Dmitri MendeleevRead
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.
Interpretation
Mendeleev suggests that there are many undiscovered elements that will likely be found in the future.
In this quote, Dmitri Mendeleev expresses his belief in the potential for future discoveries in the field of chemistry, specifically referring to elements that share properties with known elements such as aluminum and silicon. He emphasizes the importance of scientific exploration and the anticipation of new findings that can expand our understanding of the natural world.
In practice
In a science class discussing the periodic table and the potential for new elements.
No law of nature, however general, has been established all at once; its recognition has always been preceded by many presentiments.
The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that.
It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man - social and political - and to the entire universe as a whole.
The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.
The edifice of science not only requires material, but also a plan. Without the material, the plan alone is but a castle in the air-a mere possibility; whilst the material without a plan is but useless matter.
Every usage, no matter how bizarre or nonstandard, fascinates me, as it tells me something about the way language is evolving.
Evolution could so easily be disproved if just a single fossil turned up in the wrong date order. Evolution has passed this test with flying colours.
The history of astronomy is a history of receding horizons.
Science has to be understood in its broadest sense, as a method for apprehending all observable reality, and not merely as an instrument for acquiring specialized knowledge.
A theory should not attempt to explain all the facts, because some of the facts are wrong
There was a magic about pulsars... no other things in the sky had such labels on them. Each one had its own distinct pulsing frequency, so it could be identified by anybody, including other creatures, after a long period of time and far, far away.
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