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edit: Does not work any more sony patched fake_npwhen i asked him about the warrenty he tells me not to mod my PSP, and that if the psp breaks they will bring it to a repair center and check it inside out and that "if you modified your PSP then it's not covered, the warrenty is void if you make any changes to the console that you're not supposed to" something like that....

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magazine has been continuously published since 1978, we are publishing some of the articles from the archives for historical interest, such as this.

For teaching and sharing purposes, readers are advised to supplement these historic articles with more up-to-date ones suggested in the Related Articles below.

This has to do with figuring out the age of ancient things.

If you could watch a single atom of a radioactive isotope, U-238, for example, you wouldn’t be able to predict when that particular atom might decay.

Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons.

This means that although they are very similar chemically, they have different masses.

Australian National University provides funding as a member of The Conversation AU.

These excited neutrons then collide with nitrogen atoms in the atmosphere, changing them into radioactive carbon-14 atoms.

CARBON-14 IS ABSORBED (Figure 1b): Plants absorb this carbon-14 during photosynthesis.

As soon as it dies, however, the C ration gets smaller.

In other words, we have a ‘clock’ which starts ticking at the moment something dies.