Nuclear Energy. Fission vs. Fusion Fuse small atoms 2H 2 He NO Radioactive waste Very High Temperatures ~5,000,000 o C (SUN) Split large atoms U-235 Radioactive.

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Presentation transcript:

Nuclear Energy

Fission vs. Fusion Fuse small atoms 2H 2 He NO Radioactive waste Very High Temperatures ~5,000,000 o C (SUN) Split large atoms U-235 Radioactive waste (long half-life) Nuclear Power Plants Alike Different Create Large Amounts of Energy E = mc 2 Transmutation of Elements Occurs Change Nucleus of Atoms Fusion Different Topic Fission

Irradiate d Spam Use fear and selective facts to promote an agenda Eating animals? Radiation = Bad Look who is funding research; it may bias the results.

Shielding Radiation

Nuclear Fission First stage: 1 fission Second stage: 2 fission Third stage: 4 fission

Nuclear Fission

Nuclear Power Plants map: Nuclear Energy Institute

Fermi Approximations FERMI APPROXIMATIONS An educated guess – based on a series of calculations of known facts – to arrive at a reasonable answer to a question. How many piano tuners are there in New York City? ANSWER: Enrico Fermi 400 piano tuners

Nuclear Fusion Sun + + Four hydrogen nuclei (protons) Two beta particles (electrons) One helium nucleus + Energy

Conservation of Mass …mass is converted into energy Hydrogen (H 2 ) H = amu Helium (He) He = amu FUSION 2 H 2  1 He + ENERGY amu x amu = amu amu This relationship was discovered by Albert Einstein E = mc 2 Energy= (mass) (speed of light) 2

Time Travel? …Albert Einstein also discovered the Geometry of Space Near a Black Hole Einstein’s theory of general relativity maybe interpreted in terms of curvature of space in the presence of a gravitational field. Here we see how this curvature varies near a black hole.

Time Travel? …Albert Einstein also discovered the Geometry of Space Near a Black Hole Einstein’s theory of general relativity maybe interpreted in terms of curvature of space in the presence of a gravitational field. Here we see how this curvature varies near a black hole.

Time Travel? …Albert Einstein also discovered the Geometry of Space Near a Black Hole Einstein’s theory of general relativity maybe interpreted in terms of curvature of space in the presence of a gravitational field. Here we see how this curvature varies near a black hole.

Tokamak Reactor Fusion reactor 10,000,000 o Celcius Russian for torroidial (doughnut shaped) ring Magnetic field contains plasma

Cold Fusion? Fraud? Experiments must be repeatable to be valid

Number of half-lives Radioisotope remaining (%) Half-life of Radiation Initial amount of radioisotope t 1/2 After 1 half-lifeAfter 2 half-lives After 3 half-lives