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US: Stop the presses!

November 30, 2012

Ken Ham doesn’t understand radioactive decay.

Or very much else, apparently.

I once again challenge Bill Nye to give us one example of how evolution has anything to do with the development of technology and to explain how smoke detectors have anything to do with the age of the earth—when a detector is actually the result of intelligent observational science and the accumulated information about the properties of matter that enabled inventors to build such technology.

Around the World with Ken Ham

Smoke detectors/alarms are important safety devices, because of their obvious potential to save lives and property. There are two types of smoke detector commonly available in many countries.

One type uses the radiation from a small amount of radioactive material to detect the presence of smoke or heat sources. These ‘ionisation chamber’ smoke detectors are the most popular, because they are inexpensive and are sensitive to a wider range of fire conditions than the other type.  They contain some americium.

The ages of Earth and Moon rocks and of meteorites are measured by the decay of long-lived radioactive isotopes of elements that occur naturally in rocks and minerals and that decay with half lives of 700 million to more than 100 billion years to stable isotopes of other elements. These dating techniques, which are firmly grounded in physics and are known collectively as radiometric dating, are used to measure the last time that the rock being dated was either melted or disturbed sufficiently to rehomogenize its radioactive elements.

[My emphasis]

See, Ken? You don’t have to be Bill Nye, you just have to know the word ‘Google’.

And incidentally, in Ken’s cosmology ‘Around the World’ is a misnomer.


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