This is a detailed presentation about our sun. It talks about all the extensive facts and gets quite detailed. It is filled with pictures to illustrate your points. Perfect for that A+ you've always wanted, don't forget to click on my referral!
A-Z about fission energy. The presentation contains peaceful use of nuclear energy to the weapons that uses this energy to cause havoc. At the end I included several measures anyone may take to increase their odd of survival in case of nuclear war. Hope you like the presentation. Thank you.
This is a detailed presentation about our sun. It talks about all the extensive facts and gets quite detailed. It is filled with pictures to illustrate your points. Perfect for that A+ you've always wanted, don't forget to click on my referral!
A-Z about fission energy. The presentation contains peaceful use of nuclear energy to the weapons that uses this energy to cause havoc. At the end I included several measures anyone may take to increase their odd of survival in case of nuclear war. Hope you like the presentation. Thank you.
A particle accelerator
Sends charged particles, which constantly accelerate through a ‘Dee’, through a circular path until they are (most likely) directed towards a designated target for a specific purpose
This PPT contains all about cyclotron. That is introduction, history, types, uses, construction, working and limitations of cyclotron. This PPT also contains derivation and formula for cyclotron. Pictorial presentation is understandable for higher secondary school student. Although it is for Bachelor's level.
ADVANTAGES Nuclear power generation does emit relatively low amounts of carbon dioxide (CO2). The emissions of green house gases and therefore the contribution of nuclear power plants to global warming is therefore relatively little. This technology is readily available, it does not have to be developed first. It is possible to generate a high amount of electrical energy in one single plant
Conceptually, it has been designed to be the most energy-efficient fusion reactor. Effectively, a clean, safe, dense and environmentally friendly power source to supply the world's energy needs, with no greenhouse gases, no neutron emission, no radioactive waste, no thermal waste, no large land areas, no environmental impact, no interruptions by the weather or time of day, no nuclear meltdowns and no proliferation. It is to be the ultimate energy source, an affordable answer to the world’s energy problems; the right path to a more sustainable, peaceful and prosperous future for our planet. Potentially, the CrossFire Fusion Reactor can produce directly and efficiently an enormous quantity of electricity with less cooling water than conventional thermal power stations, releasing only the non-radioactive, non-corrosive, inert, and safe helium-4 gas.
http://www.crossfirefusion.com/reactor
A particle accelerator
Sends charged particles, which constantly accelerate through a ‘Dee’, through a circular path until they are (most likely) directed towards a designated target for a specific purpose
This PPT contains all about cyclotron. That is introduction, history, types, uses, construction, working and limitations of cyclotron. This PPT also contains derivation and formula for cyclotron. Pictorial presentation is understandable for higher secondary school student. Although it is for Bachelor's level.
ADVANTAGES Nuclear power generation does emit relatively low amounts of carbon dioxide (CO2). The emissions of green house gases and therefore the contribution of nuclear power plants to global warming is therefore relatively little. This technology is readily available, it does not have to be developed first. It is possible to generate a high amount of electrical energy in one single plant
Conceptually, it has been designed to be the most energy-efficient fusion reactor. Effectively, a clean, safe, dense and environmentally friendly power source to supply the world's energy needs, with no greenhouse gases, no neutron emission, no radioactive waste, no thermal waste, no large land areas, no environmental impact, no interruptions by the weather or time of day, no nuclear meltdowns and no proliferation. It is to be the ultimate energy source, an affordable answer to the world’s energy problems; the right path to a more sustainable, peaceful and prosperous future for our planet. Potentially, the CrossFire Fusion Reactor can produce directly and efficiently an enormous quantity of electricity with less cooling water than conventional thermal power stations, releasing only the non-radioactive, non-corrosive, inert, and safe helium-4 gas.
http://www.crossfirefusion.com/reactor
Save Our Environment, Stop Nuclear Energy UsageSourish Jana
Spread this presentation by sharing to everyone so that the adverse effect of Nuclear Fission can be stopped otherwise the end of the days after tomorrow will come soon.
http://www.ces.fau.edu/nasa/mod
ule-2/how-greenhouse-effect-
works.php
This figure shows the blackbody spectra of Earth and sun. The incoming radiation from
the sun is much more intense (Y-axis) than that of outgoing radiation from the Earth
because the energy emitted from a blackbody is proportionate to its temperature to the
fourth (σT4) – i.e. the sun emits a far greater amount of energy than the Earth. Incoming
solar radiation is shortwave (X-axis, wavelength in microns) and in the wavelength range
of ultraviolet and visible radiation (shown as the rainbow spectrum of colors). Outgoing
Earth’s radiation is long wave and and is in the range of infrared radiation (shown in red).
Below the blackbody spectra, molecules in the atmosphere, known as greenhouse gases,
interfere with incoming and outgoing radiation. For instance, ozone (O3) in the
stratosphere absorbs some of incoming radiation and is known as the ozone layer. That
said, greenhouse gases (N2O, O3, CO2, and H2O) mainly interfere with outgoing radiation.
Let’s talk about the molecular motion of these greenhouse gases to understand the
greenhouse effect.
Molecular Motions and the Greenhouse Gases H2O and CO2
2349cm-1 667cm-1
Here are the physical causes (molecular motion) of the greenhouse effect. But first… it
may be a bit chunky, so sit back, take a deep breath!
Gas molecules can absorb or emit radiation in the infrared range in two different
ways. One way is by changing the rate at which the molecules rotate. The theory of
quantum mechanics describes the behavior of matter on a microscopic scale – that is,
the size of molecules and smaller. According to this theory, molecules can rotate only
at certain discrete frequencies as if vibrations of a piano string in that they tend to be
at specific “ringing” frequencies. (The rotation frequency is the number of revolutions
that a molecule completes per second.) The molecule can absorb incident wave
(energy), if this incident wave has just the right frequency.
This frequency of the radiation that can be absorbed or emitted depends on the
molecule’s structure. The H2O molecule is constructed in such a manner that it
absorbs infrared radiation of wavelengths of about 12 micrometers and longer. This
interaction gives rise to a very strong absorption feature in Earth’s atmosphere called
the H2O rotation band. As shown in the previous slide, virtually 100 % of infrared
radiation longer than 12 micrometers is absorbed with a combination of CO2 and H2O.
(By the way, the H2O rotation band extends all the way into the microwave region of
the electromagnetic spectrum, i.e. above a wavelength of 1000 micrometer, which is
why a microwave oven is able to heat up anything that contains water.)
Molecular Motions and the Greenhouse Gases H2O and CO2
2349cm-1 667cm-1
The second way in which molecules can absorb or emit infrared radiation is by changing
the amplitude at which they vibrate. Molecules ...
2. What we are going to achieve today Find out about a chain reaction Understand how a nuclear power plant works Know what they do with the nuclear waste Know how we are protected from radiation on the Earth Know how spacemen protect themselves in space
4. A Chain of Chain Reaction in a Nuclear powers station A Neutron is released into a large number of Uranium atoms. when the Neutron hits a Uranium atom .................( finish the sentence)
5. When an atom splits into two smaller atoms energy is released and ....... (finish the sentence)
13. Read the paper and answer the questions Nuclear Waste Disposal – Questions Why does radioactive material emit less radiation as time goes on? Why is it important that the storage site should have a deep (low) water table? Imagine that a small amount of radioactive waste were to get into the drinking water supply. Which do you think would be most dangerous to health: an emitter of alpha, beta or gamma rays? Why? Name the disease that radiation exposure increases our chances of getting. A large proportion (often about 30%) of radioactive waste from nuclear power stations consists of plutonium-239, atomic number 94 (which is virtually non-existent in nature). It is unstable and breaks up (decays), emitting alpha particles. Write the symbol for the other product of this decay, an isotope of uranium. (Answer: uranium-235, atomic number 92) Current plans are to bury 70,000 tons of waste in Yucca Mountain, filling the available space by about 2036. Let us assume that 20,000 tons of this waste consists of plutonium-239, which has a half-life of 24,000 years. This means that if you take a handful of plutonium-239, you can predict that half of its atoms will have decayed within 24,000 years (although you can’t predict which ones). How much plutonium-239 will be left after 48,000 years? Think of as many ways as you can for radioactive waste, after it has been buried, to find its way up to the surface where it could harm people and other life. (Possible answers: volcanic eruption (last one in the area was 10,000 years ago, and history shows the area is becoming less volcanically active with time), earthquakes (waste containers will be designed to withstand ‘worst case’ earthquakes, and earthquakes release most of their destructive force at the surface), raising of water table, climate change leading to increased rainfall with water reaching the waste containers below and corroding them (made of extremely corrosion-resistant alloy, and past climate change suggests that rainfall is not likely to increase much in the next 10,000 years), drilling/mining by future humans who are unaware of the repository’s presence (unlikely that future inhabitants will lose knowledge of the repository while still retaining the technology to drill/mine that deep, and anyway there are no resources worth mining). Based on US Department of Energy calculations, an individual living at Yucca Mountain 10,000 years in the future will receive an annual radiation dose less than what he or she would receive from eating a single banana a year. Have a guess as to why bananas might be slightly radioactive. (Answer: bananas contain potassium which has a small naturally-occurring radioactive component. Dose: 0.1 microsieverts.)
14. Protection from radiation The Earth magnetic field protects us from the suns radiation. This can be seen as the aurora (Northern lights) Find out how people are shielded in space from radiation.
15. Styles from a hat You must write down an explanation of what you have learnt today using a style from the hat. You may be as creative as you like, Each pair will have a style, you can discuss what you will write in your book and then both write it in your book
16. Styles Pantomime Western Romance Soap Opera Sci-Fi Period drama Crime/ murder mystery Horror Action adventure Comedy