42's (apparently) four posts have been deleted. Unfortunately, I only have three of them, as one was deleted in the time between loading the index and clicking the link. I hope he saved them, whoever he is.
Anyway, here they are.
Magestorm Allgoode wrote:
WHY LASERS OR ENERGY WEAPONS CANNOT BE MEASURED IN MEGATONS
Lasers or other energy type weapons are rated not on destructive force. They are measured in power consumed. Hence, you can have a 100 MEGAWATT laser, but no way can you have a 100 MEGATON laser.
This would be like someone asking, "How many Newtons does it take to move an object?" and getting back "1000 BTU" YES, both measure energy. However, this does not mean you can simply interchange them back and forth.
Newtons are a unit for force, not energy. Although i don't expect you know what the difference is.
Explosives are rated on how much TNT it would take to create a similar blast. So, an 800 pound blast would mean it requires 800 pounds of TNT to create a similar explosion. Hence, one megaton means it would take one million tons of TNT to create a similar explosion.
Think I am being silly? Nope. Both measure energy, right? Therefore, someone using your logic can sit there and use ANY unit of energy to answer whatever question they wish.
Let me explain: energy is the capacity to do work, work is force x distance. That is, applying a certain force to an object causing it to move a certain distance requires a certain amount of energy. There are many different forms of energy, e.g. a bullet has kinetic energy, gasoline has chemical potential energy, an axe in mid swing has gravitational potential energy. The SI unit for energy is the joule. All those things can be measured in joules. However, when it comes to big explosions, it's conventional to use the non-SI unit of tons. An explosion is just a rapid release of energy, usually in the form of heat. Tons are just another unit which is used to measure of energy. A megaton is defined to be 4.18 petajoules. It's derivation from the specific combustion energy of TNT (4.184 MJ/kg) does not mean it's not just a unit of energy like joules. Yes, anyone can sit there and use any unit of energy to answer a question resulting in energy, you can 'interchange them back and forth'.
And as far as the Watt/Joule argument, they are more like converting Imperial Measurements (US scale) to Metric. We ALL know that a Kilogram is NOT the same as a Pound. A Kilometer is NOT the same as a Mile. A Liter is NOT the same as a Gallon.
No, because watts and joules aren't just different units of the same quantity. You can measure distance using either kilometers or miles, but you can't use kilograms. Miles measure distance, kilograms measure mass. Watts measure power, joules measure energy. Power = Energy / Time.
Picture water flowing from a tap into a bucket. There might be 10 milliliters flowing into the bucket for every 1 second that passes. Run the tap for 100 seconds, and you have a liter of water in the bucket. I will now christen the unit of 'Flow' to be the Allgoode. I define the Allgoode to be 5 milliliters per second. That tap has a flow of 0.2 Allgoodes. For a duration of 100 seconds, that tap gives a volume of 1 liter. The Watt was defined to be 1 joule per second. For a pulse duration of 100 seconds, a laser with a power of 1 watt gives an energy of 100 joules. Get it now?
Magestorm Allgoode wrote:
Ok. Seems you still are not getting it there.
Newtons DO measure energy. They measure KINETIC energy.
No, they do not. You're obviously just pretending to know what you're talking about. I can't believe you wrote that with a straight face. Kinetic energy is measured in joules, just like every other kind of energy. E.g. a 1kg rock moving at 10 metres per second has a kinetic energy of 50 joules. It's extremely basic: KE = 1/2mv^2.
Anyone who has ever taken any kind of physics knows this stuff.http://dictionary.reference.com/search?q=newton&r=67http://en.wikipedia.org/wiki/Newton
YES, there are formulas that can convert the energy released in an explosion from Joules to megatons. However, that is not the entire use of the Megaton. A Megaton measures the entire blast force in ammount of dynamite. Please reread the science books and websites, or look at sites dealing with nukes.
No, megatons don't measure 'the entire blast force in ammount of dynamite', they measure the energy released by the explosion based on the energy density of TNT. You can't even get the chemical right: dynamite is stabilised nitro, TNT is completely different.
Don't assume I do not understand P=I*E at all. I KNOW what these things are. However, Michael Wong's website used the Watt and Joule interchangeably. Maybe the science lesson is better suited to him then.
No, for electrical currents, P=VI. Potential difference is not the same thing as energy. The most common expression for power is P = E/t, and it's measured in units of joules per second, also known as watts. This is simple stuff, you have to admit that you really don't know what you're talking about.
Magestorm Allgoode wrote:
Reread the AOTC section closely, and you will see what I am talking about.
The Watt / Joules thing is a simple matter that while you CAN convert between the 2, you can't simply use them interchangeably. A kilometer and a mile both measure distance, but you can't state that 300KM is the same as 300Miles, or vice-versa. Simply a nono.
No, you couldn't be more wrong. Yes, miles and kilometers both measure distance, and one is from the metric system and the other is imperial. Watts and joules are NOT from two different metrological systems, measuring the same quantity. They are both SI units, and watts measure power while joules measure energy. Just look at the equation: P=E/t.http://dictionary.reference.com/search?q=watt&r=67http://dictionary.reference.com/search?q=joule
What you're saying is analogous to claiming that velocity and distance are the same thing, and then trying to prove this by saying that pounds and kilograms both measure mass.
Velocity = Distance / Time.
Power = Energy / Time.
You = Are / Wrong.
Magestorm is saying 42 was an already banned poster.
As an aside, the other day I measured the flow rate of my urine. 4.16 Allgoodes. woot.