Sentences with phrase «enough radioactivity»

He probably inhaled enough radioactivity to kill the average person many times over; he died aged 90.

Strutt measured radioactivity in various rocks and found that granite contained more than enough radioactivity to explain all geothermal heat.

In principle we don't even have proof that the Earth isn't heating up instead of cooling down, because if there was enough radioactivity, it could heat up the Earth instead of letting the Earth cool down.

There is not enough radioactivity in the core to account for this, so scientists now speculate that the planet may either be shrinking at the rate of a few centimetres a year, or that the vast quantities of helium in the atmosphere are separating out from the hydrogen and slowly sinking.

Not exact matches

After the glass logs solidify the waste is trapped and should be isolated from the environment for long enough for most of the radioactivity to decay to safe levels.

This was enough to shut the facility down for recovery, but very little radioactivity — a few milliCuries — escaped into the environment.

The tanks boiled for years with the heat of their own radioactivity — intense enough, it was believed, to destroy the «organics» like rubber, plastics and oils that were dumped in too.

In other words, radioactivity is concentrated in the crust but has not been there long enough to reach steady state.

Re 392 Chris Dudley — I don't understand what you mean by R ^ 2T ^ 4 — and there should be something about how optical depth is proportional to R, and also, if you're going a significant distance toward the center of such an object, there is the issue of spherical geometry; if the optical thickness is large enough across small changes in radius, then you don't need to account for the spherical geometry in the calculation of the flux per unit area as a function of the temperature profile and optical thickness; however, the flux per unit area outward will drop as an inverse square, except of course within the layers that are being heated through a different process (SW heating for a planet, radioactivity, latent and sensible heat loss associated with a cooling interior, gravitational potential energy conversion to enthalpy via compression (adiabatic warming) and settling of denser material under gravity (the later both leads to compression via increased pressure via increased gravity within the interior, and also is a source of kinetic energy which can be converted to heat)...

I'm still not entirely comfortable with nuclear but I admit ignorance there and thus don't really advocate directly against it (PS somewhat the same position with GM foods / crops); what I know enough to be afraid of and advocate against is a BAU future of coal, oil, and gas, especially one without CCS or other sequestration, with mountaintop removal mining, with tar sands, with fracking (you may already be aware of the radioactivity associated with that), Hg, escalating prices, etc (and you would be against this too, I'm sure).