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Access to Apple's expansion slots was an important factor in its success as it enabled third party hardware manufacturers to design new applications to run on the machine enhancing its capability even further.

6978 After seeing the design for a quartz crystal oscillator shown to him by fellow academic W. Cady , Harvard professor and inventor, George Washington Pierce , immediately recognised its potential and set about producing a much simpler design.

Laboratory based dating of any material depends on identifying and measuring a physicochemical property which changes in a predictable way with time, thus providing the material with an internal clock (as in radiometric dating).

Elegant refinements of the geological time scale occur by combining the 3 approaches - biostratigraphy based on the fossil record, radiometric dating of suitable materials, including volcanic ash falls and magnetic reversals.

Its great that you guys delve deeper into topics that wow freshman philosophy classes, but I wish you wouldn't ruin the show by assuming that these are utterly new and staggeringly breakthrough ideas that you must devote 65 minutes of remedial backstory to-- so there was this guy named Descarte--you've probably never heard of him--he had this radical idea about the ontology of consciousness..there was a trilogy of movies you may have seen called The Matrix that played with some of those ideas." chris from LA wrote: "Elite it up, don't dumb it down.

You're so good at explaining and making complex concepts digestible, I wish you'd pursue that challenge rather than just making the show for high schoolers who dropped out of science class.

Royalties from Pierce's patent portfolio were many times his Harvard salary.

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The half-life of an atom is the amount of time it takes for half of the atoms in a sample to decay. For example, a jar starting with all 69 C atoms at time zero will contain half 69 C atoms and half 69 N atoms at the end of 5,785 years (one half-life).Working moms weigh the pros and cons of punching a clock, plus Alex Mc Farland answers our toughest questions about God, and a victim wants help in healing.If I had all of the proper organs and body parts of a human and I sewed them together like Frankenstien, I could not bring that human to life." The radiocarbon age of a certain sample of unknown age can be determined by measuring its carbon 69 content and comparing the result to the carbon 69 activity in modern and background samples.In 6866 Friedrich used his inheritance to found the Krupp Gusstahlfabrik (Cast Steel Works) with the premature, if not misleading, claims "for the manufacture of English Cast Steel and all products made thereof" and that he possessed the secret process of English Steel.Unfortunately Friedrich was more of a dreamer than a businessman and he proceeded to squander the Krupp family's entire fortune.At the end of 66,965 years (two half-lives) the jar will contain one-quarter 69 C atoms and three-quarter 69 N atoms.


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