But as such, I don't rule out
nuclear fission as a potentially, if not likely necessary, part of a carbon - neutral energy economy.
Okoshi also found inspiration in the work of Mark Toby... Is it reading too much into the relationship of this postwar period and the Japanese - ancestry if not nationality of several of these artists, to offer that Yellow Slow (by Kawabata) is a shape that could have expressed
nuclear fission as well as a phenomenon of perception?
Somehow this super-sleuth machine threatens civilization, as information has replaced
nuclear fission as the means to control the world.
Some environmentalists include
nuclear fission as well.
Not exact matches
The
nuclear power plants in use around the world today use
fission, or the splitting of heavy atoms such
as uranium, to release energy for electricity.
In 1931 he gave specific figures about
nuclear fusion
as a source of energy far superior to
nuclear fission.
Meitner and Frisch were able to provide an explanation for what he saw that would revolutionize the field of
nuclear physics: A uranium nucleus could split in half — or
fission,
as they called it — producing two new nuclei, called
fission fragments.
The back end of the
nuclear fuel cycle, mostly spent fuel rods, often contains
fission products that emit beta and gamma radiation, and may contain actinides that emit alpha particles, such
as uranium - 234, neptunium - 237, plutonium - 238 and americium - 241, and even sometimes some neutron emitters such
as Cf.
F: A
nuclear - thermal rocket — a
fission reactor that heats hydrogen to 4,000 degrees Fahrenheit — gives you an exhaust velocity twice
as fast
as the best chemical rocket.
By far the most rigorously researched of the Tintin stories, it features
nuclear fission, the effects of gravitation in space and why meteorites make lunar craters,
as well
as side references in Professor Calculus's log book to the «constant of solar radiation» and the «limits of the solar spectrum in the ultraviolet».
I was very surprised to read in your editorial that
nuclear fission reactors are accepted
as one of the energy...
And that means there may be two direct paths for radioactive particle byproducts of
nuclear fission, such
as cesium 137 and iodine 131, to escape and spread radiation — cracks in containment
as well
as the spent fuel pools now open to the air.
I was very surprised to read in your editorial that
nuclear fission reactors are accepted
as one of the energy providers that should feature in the UK's energy generation portfolio (9 November, p 3).
Such
nuclear reactors can actually «consume» plutonium via
fission (transforming it into other forms of
nuclear waste that are not
as useful for weapons).
The idea remains that fast reactors, which get their name because the neutrons that initiate
fission in the reactor are zipping about faster than those in a conventional reactor, could offer a speedy solution to cleaning some nasty
nuclear waste, which
fissions better with fast neutrons, while also providing electricity
as a by - product.
Elements in this so - called island of stability could act
as powerful
nuclear fuel for future
fission - propelled space missions.
So it's a serious entrant, and from my potentially biased point of view in the
nuclear fission category, I don't know many other entrants that you look and say, «Okay, if you go from paper to real then this is a meaningful contribution to cheap energy / global warming
as an incredible problem.»
Enriched uranium oxide is formed into rods and water is used both
as a coolant, flowing through the reactor core to transfer heat away, and
as a moderator, slowing down neutrons released by
fission so that they promote further
nuclear reactions.
To set off an H - bomb, a
nuclear fission blast is used
as a detonator.
It has many sources, including the sun, electronic devices such
as microwaves and cellphones, visible light, X-rays, gamma waves, cosmic waves, and
nuclear fission, which is what produces power in
nuclear reactors.
Antineutrinos are a by - product of the
fission in a
nuclear reactor, in which an atomic nucleus of a radioactive element such
as plutonium splits into lighter elements.
Nuclear reactors need to cool fuel
as they undergoes the
fission chain reaction.
Take a look at these two graphs showing the probability (called the cross-section in
nuclear lingo) of capture and the probability of
fission as a function of neutron energy for U-235 and U-238.
He leads the Fuel Material and Chemistry Focus Area of the Consortium for Advanced Simulation of Light Water Reactors, a DOE Energy Innovation Hub,
as well
as Scientific Discovery through Advanced Computing (SciDAC) projects on plasma surface interactions and
fission gas behavior in
nuclear fuel.
As a final remark - CO2 capture and storage can only be a transitional technology - it can herald the hydrogen economy - it can also give us a choice not to use
nuclear fission whilst fusion is still being dveloped.
The exhibits offer interactive modules for learning about prominent physicists such
as Marie Curie and Albert Einstein and important research such
as the discovery of the electron, global warming, and
nuclear fission.
As an avid Terry Pratchett game (his books and Firefly are the only two things I've ever claimed to be a fanboy about) I cracked open the Discworld board game with something approaching
nuclear -
fission generating levels of excitement, but I suppressed that feeling quickly because board games are an art, their design tricky to master.
Moore's piece was commissioned to commemorate the first successful
nuclear fission, which took place on campus in 1941 and we now know it
as the birthplace for the Manhattan Project.
As here, refuting Jon Kirwan's concern (# 150): «the speediest drop in greenhouse gas pollution on record occurred in France in the 1970s and «80s, when that country transitioned from burning fossil fuels to
nuclear fission for electricity, lowering its greenhouse emissions by roughly 2 percent per year.»
As a final remark - CO2 capture and storage can only be a transitional technology - it can herald the hydrogen economy - it can also give us a choice not to use
nuclear fission whilst fusion is still being dveloped.
I don't think Cosmic Rays were ever
as much about it [AGW],
as say, what to do about it; if «it» were indeed happening, whether by anthropogenic causes or combinations or other field properties -
nuclear power is NOT the way to go; humans will adapt and survive over shorter time periods in climate than over the half - lives of
nuclear fission byproducts.
But with advanced
nuclear power, such
as LFTR or LENR or any one of 15 other safe fusion and
fission schemes, we can solve it.
This process doesn't produce the radioactivity and
nuclear waste,
as would be found in
nuclear power stations,
as this process if different, and known
as nuclear fission.
In almost all locations of this world (except on top of a coal mine,
as in Australia) today's
nuclear fission technology competes with new clean coal plants with no carbon tax figured in.
Extra heat from all sources — including the interior of the planet, fossil fuel burning,
nuclear fission, solar radiance, north - south asymetry and — the big one — cloud radiative forcing — is retained in planetary systems
as longwave emissions and shortwave reflectance adjusts to balance the global energy budget.
For something
as complicated
as climate science, the long run is longer than for making a bomb and
nuclear power plant after the discovery of
fission, which itself was a long time coming after the discovery of radioactivity.
So let's just agree to subtract it out
as completely irrelevant to a discussion of thermodynamics, unless the «air» in question is inside the core of a star that is in the peculiar state where it is fusing oxygen and nitrogen or sometimes
fissioning them with fast neutrons (the only processes I can think of that might change their baseline mass - energy by altering their strong
nuclear interaction energy).
But, unlike the sum of these energies,
nuclear fission energy has sufficient capacity to replace fossil fuels
as they become scarce.
While
nuclear energy is regarded
as the lesser of the two evils when compared at an emission level to the burning of fossil - fuels, it may trump on the containment of the heat process, which burns in a contained
nuclear reactor through an in - ward heat - chemical reaction called
fission, but
nuclear energy production is a chain from uranium mining to the toxic waste disposal and therefore
as an entire process is an equally high risk environmental option.
Thus it makes pragmatic sense to me to focus our attention on a medium term adaption policy, whilst investing heavily in cleaner cheap sources of baseload energy, such
as thorium
fission and gen4
fission reactors and, in the slightly longer term,
nuclear fusion reactors.
As for how to meet increasing demand for electricity without using more fossil fuels, I think
nuclear fission is the only currently viable option.
Electricity generation emerged
as the best civilian application for
nuclear fission.
Nuclear fission, as you all know better than I, as a long term alternative to fossil fuels, depends on development and wide use of nuclear breeder reactors with concomitant problems of proliferation of atomic weapons mat
Nuclear fission,
as you all know better than I,
as a long term alternative to fossil fuels, depends on development and wide use of
nuclear breeder reactors with concomitant problems of proliferation of atomic weapons mat
nuclear breeder reactors with concomitant problems of proliferation of atomic weapons materials.
As this paper states, «Covering 0.16 % of the land on Earth with 10 % efficient solar conversion systems would provide 20 TW of power, nearly twice the world's consumption rate of fossil energy and the equivalent 20,000 1 - GWe
nuclear fission plants».
Unless this report has addressed the diseconomies of atomic
fission, then it may be used to endorse «
nuclear energy»
as «clean, renewable energy.»
would scream just
as loud at
nuclear fusion
as they do at
nuclear fission.
But then I went on to envisage, at least in my own mind, a time when large fossil fuel generators had all closed own — mainly in order to avoid ruining our one and only habitable planet — and that the 24/7 power supply would be a mix of Solar PV, solar thermal (eg CSP), wind and the lesser sources such
as hydro, tidal, geothermal etc having taken over the complete electricity supply — especially since Australia doesn't have, and is almost certain never to have,
nuclear fission plants.