*eyebrow* I'd like to see your work there, cowboy. Most of the time, thermodynamic processes don't give above-unity efficiency. And by "most", I mean "absolutely all".
It's called a heat pump, and he means COP. The idea is just a standard gas compression refrigerator with storage. You can do much the same with a phase change system (i.e. normal refrigeration). More interesting is open cycle absorbtion cycle systems based on say LiCl and water.
Or, you could do as I do and just use a big box of water to even the temps out between day and night.
I believe the 540 cft refers to the amount of STP gas that is stored inside. It's all squashed up in there (sort of like a change in space time or something).
Ok, I have never used a rebate as I have never had one offered that compelled me. Implementation is obviously an issue. I guess the delays are a) to discourage recovery and b) short term money market stuff.
I don't know what a coupon discount is I'm afraid .
Which is why rebates are so effective - they separate customers into those who are money-poor/time-right who send in the coupons, and those who are money-rich/time-poor who don't bother.
Spectra is (roughly) an infinite dimensional space which our eyes approximate with a 3d vector. There are plenty of examples of pigments which look identical to human eyes but which have negligible inner product.
The purple leaves are due to high levels of http://en.wikipedia.org/wiki/Anthocyanin an important antioxidant which reduces cell damage then the plant is stressed. The same reason apples are red and blueberries are blue. (Though not why wounded people are red)
Did you know that the default gnome keys are cntl-alt-arrow to move to new workspaces and cntl-shift-alt-arrow to bring the focused window with you? I jump around so fast that any animation just annoys me.
7) You actually think Linux's user interface is nicer than OS X (since they both offer the same choice of shells, this comes down to GUI preference).
This is the most common reason where I work - people find Ubuntu a nicer interface than MacOS. Having just got a current imac, I'm inclined to agree. The MacOSX interface is actually quite clumsy compared to the default gnome interface in 6.10.
Switching to Ubuntu on the mac is a common enough query that we have an image for it now.
And he's wrong. Fuel cells are also limited by the carnot cycle, Thot being the equilibrium temperature of the reaction - the flame temperature if you like. And like any reversible heat engine, they are more than '100% efficient' in reverse.
Not all mechanisms of converting chemical energy to more useful forms are governed by the Carnot efficiency. Fuel cells are one example of energy conversion systems that aren't.
Oft cited figures for well to wheels (and equivalent for humans) is equivalent to say 6l/100k for a prius and 0.2l/100km for a cyclist. Cars are a great form of transport when they are fully loaded, driven for long time periods and in good tune. For intracity travel PT + bikes are vastly more efficient.
The home desktop will always be more comfortable, and as a result my files will always be there. Transferring them to the laptop on the fly is a pain when home upload speeds are so terrible with most ISP's
I think you'll change your mind eventually. I switched to a laptop about three years ago, and now I rarely (can't remember the last time) sit down at the desktop. In fact, I can't stand full sized keyboards anymore (and I have really big hands). As a result, all of my important files are on the laptop. The desktops at home have become the kids' homework and game centers. My wife an I are both laptop-only users these days.
I think you'll change your mind eventually. I switch to a laptop about 7 years ago, used it (with wifi, outside etc) for 3 years, and I got such terrible back and wrist pain I hardly use a laptop any more. I've just given away my laptop completely and my wife and I are both desktop-only users these days.:)
You can have your portability, I'll keep my vast screen real-estate, ergonomics and performance.
You'd be surprised I think. The hydrogen producing algae need fairly special conditions and fairly special algae. This means that they would need to be encased in light transmitting, long life, hydrogen proof panels of some sort - and quickly you're looking at panel technologies that are going to be more expensive than simple coatings approaches required for PV. Concentrating approaches that work for PV would kill the algae too. The algae will need nutrients and waste handling as well as hydrogen separation, large areas of leak free plumbing and tight quarantine to prevent random other species from muscling in and killing your colony. Such a large scale monoculture would be quite sensitive to mutations and parasites.
Cars already have two reservoirs of water - the windscreen water and the radiator. With a little care perhaps these can be all combined into a single 'pour water in here when the light comes on' interface?
This coating moves the light more smoothly from air's RI (1) to say window glasses (1.45) and avoids the reflections.
LEDs are made from an optically dense material (plastic) and lose a portion of their light due to internal reflection and reabsorption in the plastic or on the internal structure. I don't think it is the main source of inefficiency of LEDs though.
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*eyebrow* I'd like to see your work there, cowboy. Most of the time, thermodynamic processes don't give above-unity efficiency. And by "most", I mean "absolutely all".
It's called a heat pump, and he means COP. The idea is just a standard gas compression refrigerator with storage. You can do much the same with a phase change system (i.e. normal refrigeration). More interesting is open cycle absorbtion cycle systems based on say LiCl and water.
Or, you could do as I do and just use a big box of water to even the temps out between day and night.
I believe the 540 cft refers to the amount of STP gas that is stored inside. It's all squashed up in there (sort of like a change in space time or something).
Which web based email do you use? I tried squirrelmail, but I found it clunky.
Actually, it's nearly 60%:
http://en.wikipedia.org/wiki/Betz'_law
50% ain't bad anyway. It beats many other common energy transformations. Your average automobile is probably only 10% efficient.
Ok, I have never used a rebate as I have never had one offered that compelled me. Implementation is obviously an issue. I guess the delays are a) to discourage recovery and b) short term money market stuff.
I don't know what a coupon discount is I'm afraid .
Which is why rebates are so effective - they separate customers into those who are money-poor/time-right who send in the coupons, and those who are money-rich/time-poor who don't bother.
Impressive that you can get from Shanghai, China, to Japan in just 19 miles. Just shows the world is getting smaller all the time!
Spectra is (roughly) an infinite dimensional space which our eyes approximate with a 3d vector. There are plenty of examples of pigments which look identical to human eyes but which have negligible inner product.
The purple leaves are due to high levels of http://en.wikipedia.org/wiki/Anthocyanin an important antioxidant which reduces cell damage then the plant is stressed. The same reason apples are red and blueberries are blue. (Though not why wounded people are red)
This has nothing to do with absorption spectra and everything to do with the human colour system.
Easy, you just print an Indigo printer using your new 3d printer. When you've finished your book, you unprint the printer back into stock material.
But that's the whole point - by disrupting air travel they will get great reductions in GHG emissions! The wind turbine bit is just a cover story :)
Well when I get a chance to set my new imac up with ubuntu and thus beryl, I'll give it a shot!
Did you know that the default gnome keys are cntl-alt-arrow to move to new workspaces and cntl-shift-alt-arrow to bring the focused window with you? I jump around so fast that any animation just annoys me.
7) You actually think Linux's user interface is nicer than OS X (since they both offer the same choice of shells, this comes down to GUI preference).
This is the most common reason where I work - people find Ubuntu a nicer interface than MacOS. Having just got a current imac, I'm inclined to agree. The MacOSX interface is actually quite clumsy compared to the default gnome interface in 6.10.
Switching to Ubuntu on the mac is a common enough query that we have an image for it now.
And he's wrong. Fuel cells are also limited by the carnot cycle, Thot being the equilibrium temperature of the reaction - the flame temperature if you like. And like any reversible heat engine, they are more than '100% efficient' in reverse.
HTH.
Not all mechanisms of converting chemical energy to more useful forms are governed by the Carnot efficiency. Fuel cells are one example of energy conversion systems that aren't.
Actually, they are.
Oft cited figures for well to wheels (and equivalent for humans) is equivalent to say 6l/100k for a prius and 0.2l/100km for a cyclist. Cars are a great form of transport when they are fully loaded, driven for long time periods and in good tune. For intracity travel PT + bikes are vastly more efficient.
Explain room temperature fuel cells then.
The home desktop will always be more comfortable, and as a result my files will always be there. Transferring them to the laptop on the fly is a pain when home upload speeds are so terrible with most ISP's
:)
I think you'll change your mind eventually. I switched to a laptop about three years ago, and now I rarely (can't remember the last time) sit down at the desktop. In fact, I can't stand full sized keyboards anymore (and I have really big hands). As a result, all of my important files are on the laptop. The desktops at home have become the kids' homework and game centers. My wife an I are both laptop-only users these days.
I think you'll change your mind eventually. I switch to a laptop about 7 years ago, used it (with wifi, outside etc) for 3 years, and I got such terrible back and wrist pain I hardly use a laptop any more. I've just given away my laptop completely and my wife and I are both desktop-only users these days.
You can have your portability, I'll keep my vast screen real-estate, ergonomics and performance.
You'd be surprised I think. The hydrogen producing algae need fairly special conditions and fairly special algae. This means that they would need to be encased in light transmitting, long life, hydrogen proof panels of some sort - and quickly you're looking at panel technologies that are going to be more expensive than simple coatings approaches required for PV. Concentrating approaches that work for PV would kill the algae too. The algae will need nutrients and waste handling as well as hydrogen separation, large areas of leak free plumbing and tight quarantine to prevent random other species from muscling in and killing your colony. Such a large scale monoculture would be quite sensitive to mutations and parasites.
We're not talking a pond filled with green slime.
Cars already have two reservoirs of water - the windscreen water and the radiator. With a little care perhaps these can be all combined into a single 'pour water in here when the light comes on' interface?
Hybrids should solve the turbolag problem. (whether ultraflywheel or battery)
Well get going! :)
Every time light moves from one refractive index to another some light is reflected:
http://en.wikipedia.org/wiki/Fresnel_equations
This coating moves the light more smoothly from air's RI (1) to say window glasses (1.45) and avoids the reflections.
LEDs are made from an optically dense material (plastic) and lose a portion of their light due to internal reflection and reabsorption in the plastic or on the internal structure. I don't think it is the main source of inefficiency of LEDs though.