Duration : 0:1:4
And probably the most boring. But then again, when I told that to my students and had them give me feedback, most said that if you followed along with what the presenter (a professor emeritus of Physics at Univ of Colorado-Boulder) is saying, it’s quite easy to pay attention, because it is so compelling.
Duration : 0:9:18
The Biggest Bomb Ever!!!
Duration : 0:3:28
I look at a map of energy production around the world. There are so many mines, so many drill sites pumping oil, so much Energy being extracted, competing with solar production etc. Is the energy sector bubbled at the top? It just doesn’t make sense to me otherwise!
Unbelieveable energy mining and drilling! Unbelievable!
There are more drillings than ever before but less is oil is being extracted. Scary but its going to get worse.
Here is the link:
I understand they are catastrophic events like Chernobyl, and results in the in the release of a Nuclear fallout. What causes a nuclear meltdown and what defines a nuclear meltdown.
When a meltdown occurs in a reactor, the reactor "melts". That is, the temperature rises in the core so much that the fuel rods actually turn to liquid, like ice turns into water when heated. If the core continued to heat, the reactor would get so hot that the steel walls of the core would also melt. In a complete reactor meltdown, the extremely hot (about 2700º Celsius) molten uranium fuel rods would melt through the bottom of the reactor and actually sink about 50 feet into the earth beneath the power plant. The molten uranium would react with groundwater, producing large explosions of radioactive steam and debris that would affect nearby towns and population centers.
In general a nuclear meltdown would occurr if the reactor loses its coolant. This is what occured in the two disasters that we will discuss. Without coolant, the core’s temperature would rise, resulting in the meltdown scenario we explained above.
I HOPE you found this useful. Happy New Years!!!
Consider the following issues:
Which sources could be used to supply a household’s needs? How could each source be used?
Where would the home have to be located to use each source?
What equipment would be needed? Where would this equipment be located?
What backup systems should be included?
For all you smart people out there, please answer all of these questions!
geothermal, while not renewable, is often classed in this area as it is inexhaustable.
Depends on the household and where it is located. Windy area, use wind power. Lots of sun, use solar power.
solar array would be on the roof. wind generator would be on a tower.
You will need a large array of batteries to supply power when the sun/wind is not available. Alternatively, sell power back to the electric utility company and use power from them during periods of no sun or wind.
if this is an isolated house with no access to the power grid, I’d have a diesel generator for backup.
Photosynthesis, the biological conversion from light Energy to chemical energy… But I thought photons have zero mass (therefore zero energy?), so where is this energy coming from? Does it just refer to the extremely small energy that comes from a photon’s momentum?
Photons have energy even if they dont have mass (rest mass). Both subjects are not directly related.
The energy of a photon is calculated as Energy=frecuency*plank constants and is usally measured in electronvolts. The average photon in solar radiation has an energy of 1.5 electronvolts.
Again, no mass is required.
I am 15, and I am asking a serious question here. Nuclear warfare is a very great threat to human civilization. I was wondering how I can build a nuclear shelter in my backyard so I am ready in case, God forbid this happening, the event of Nuclear war, or a nuclear missile going off. Whoever gives me an informative, and a serious response will get the Best Answer. I will not award it to anyone who gives me sarcasm. Thanks.
See these links with instructions on how to build a fallout shelter:
It’s always a good idea to be prepared, we live in a fallen world and sadly it is probably only a matter of time before something catastrophic happens.
Under legislation considered by the House today in Tallahassee, the states four investor owned utilities ( FP&L, Progress Energy, TECO, and Gulf Power) would be allowed to raise rates four dollars a month next year to build solar or biomass plants. But as Mike Vasilinda tells us, the legislation does nothing to help eight thousand Floridians who have already installed solar and are waiting for a promised rebate.
Duration : 0:1:30