C-14 is produced in the upper atmosphere when nitrogen-14 (N-14) is altered through the effects of cosmic radiation bombardment (a proton is displaced by a neutron effectively changing the nitrogen atom into a carbon isotope).The new isotope is called "radiocarbon" because it is radioactive, though it is not dangerous.It takes another 5,730 for half of the remainder to decay, and then another 5,730 for half of what's left then to decay and so on.The period of time that it takes for half of a sample to decay is called a "half-life." Radiocarbon oxidizes (that is, it combines with oxygen) and enters the biosphere through natural processes like breathing and eating.It is naturally unstable and so it will spontaneously decay back into N-14 after a period of time.It takes about 5,730 years for half of a sample of radiocarbon to decay back into nitrogen.And certainly there are, it’s enormously easy to match on very, very specific sexual preferences.
Also visible in the 1909 photo is a bias adjusting resistance, probably for an Electrolytic detector, a detector switch, an air inductor, a telephone microphone and another earphone. The transmitter uses two spark coils, a homemade condenser made from glass photo plates and a homemade helix.
This week’s episode is called “What You Don’t Know About Online Dating.” (You can subscribe to the podcast at i Tunes, get the RSS feed, or listen via the media player above.
You can also read the transcript, which includes credits for the music you’ll hear in the episode.) The episode is, for the most part, an economist’s guide to dating online. ) You’ll hear tips on building the perfect dating profile, and choosing the right site (a “thick market,” like Match.com, or “thin,” like Glutenfree Singles.com? You’ll learn what you should lie about, and what you shouldn’t.
The transmitter is probably using lead acid batteries that are not quite visible below the small "receiver" table. It is a "pre-regulations" ham station that is virtually complete, authentically reassembled and is displayed with photographs, taken in 1912, showing Dodd using his station.
Most of the 1909 Station parts seen in the photo were used to construct Dodd's 1912 station (below.) This is the Wireless Station that M. Dodd's station survived intact because the new regulations (the 1912 Radio Act (Alexander Bill) that went into affect in December 14, 1912) made both Dodd and his station illegal.