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Building on exchanges he had with readers of his e-mail list, in 2018 Clear published his book Atomic Habits on how to build tiny, frequent habits that have a large beneficial and cumulative effect on one's life. According to the intro of his book, he had to build such habits when rehabilitating from a severe cranial injury that he suffered ...
Pie chart showing the proportion of lurkers, contributors and creators under the 90–9–1 principle. In Internet culture, the 1% rule is a general rule of thumb pertaining to participation in an Internet community, stating that only 1% of the users of a website actively create new content, while the other 99% of the participants only lurk.
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For example, Aston discovered that neon has two isotopes with masses very close to 20 and 22 as per the whole number rule, and proposed that the non-integer value 20.2 for the atomic weight of neon is due to the fact that natural neon is a mixture of about 90% neon-20 and 10% neon-22).
An early Kornbluth novelette, "The Core", was the cover story for the April 1942 issue of Future.It carried the "S. D. Gottesman" byline, a pseudonym Kornbluth used mainly for collaborations with Frederik Pohl or Robert A. W. Lowndes The opening installment of Mars Child, by Kornbluth and Judith Merril, took the cover of the May 1951 issue of Galaxy Science Fiction A year later, the first ...
The atomic ratio is a measure of the ratio of atoms of one kind (i) to another kind (j). A closely related concept is the atomic percent (or at.%), which gives the percentage of one kind of atom relative to the total number of atoms. [1] The molecular equivalents of these concepts are the molar fraction, or molar percent.
The dalton (symbol: Da) is the standard unit that is used for indicating mass on an atomic or molecular scale (atomic mass). [1] The unified atomic mass unit (symbol: u) is equivalent to the dalton. One dalton is approximately the mass of one a single proton or neutron. [2] The unified atomic mass unit has a value of 1.660 538 921 (73) × 10 ...
The application of this one percent rule is controversial. The civil aviation regulatory authorities of some nations employ such numerical risk thresholds while others do not. Of those that use numerical risk criteria there are differences in the levels of measured / calculated risk that are applied (1% per annum, 2% per annum etc.).