Sentences with phrase «much useful energy»

That would mean humanity was producing roughly as much useful energy as all the world's photosynthesis combined.

Not exact matches

A first - party study like this obviously has to be taken with a few grains of salt, but the Nest does make it easier to keep your thermostat at less wasteful temperatures when you're away (whether it's automatically or manually from your smartphone), and it gives you useful info on how much energy you're regularly chewing up.

A kilogram of petrol contains about 4000 Watt hours of useful energy, 30 times as much as the batteries in Tesla's current crop of vehicles.

Supercapacitors have a much higher energy density than batteries, meaning they can charge and discharge extremely quickly; this is useful to meet quick spikes in electricity demand on the rail system.

Indeed, it is essential to determine luminous efficacy as accurately as possible so that such lamps can be introduced in the market that transform as much electrical energy into light useful to the human eye as possible.

From that perspective, it becomes clear that humans are prone to obesity because our bodies evolved in an environment of scarcity, where consuming as much high - energy food as possible was a useful survival strategy.

Taking too much of them can lead to a uncomfortably rapid heart beat, nausia and acute anxiety attacks, instead of a useful energy boost.

The energy in essence is simply relocated to a much more efficient way of storing it — muscles are far more useful for storing energy than fat is and they can store even more energy — they are more efficient energy stores when compared by weight.

Inca and Spanish soldiers ate huge quantities of the stuff to boost energy, stamina, and ferocity in battle, which makes it equally useful for attacking your gym workout and firing your muscles without the nasty jitters associated with too much coffee.

Much love and positive energy to Ann Marie Gianni for this useful article.

A high protein: energy ratio may be useful for people who want to get nutrients and protein without too much energy and drive high levels of satiety that will help them eat less.

These thyroid hormones are responsible in regulating the body?s metabolism, which is how much food will be broken down into useful energy for consumption.

It is obvious if we could work with a single hydrocarbon or at the worst a comparatively simple mixture of hydrocarbons, there would be a far greater opportunity of maintaining conditions for combustion that would yield a much larger percentage of useful energy as the fuel is consumed.

A useful discussion of urban futures with a focus on energy and resilience to environmental hazards took place today at The New York Times, including panels of mayors, a chat between me and the actor Jeremy Irons over his involvement in the documentary «Trashed» and much more.

So, if we want a sustainable future we had better get a handle on how much energy there actually is that is available to do useful work, and how much is humankind's fair share.

I would note that Alex Trembath's useful intervention to this discussion provides insight into why we can expect global energy consumption will continue to grow, and tangentially why so much of that energy will be supplied by fossil fuels without an major breakthroughs in energy technology.

Much of Russel Gehrke's Renewable Energies for your Home is a useful compendium of information for people who want to build a solar dryer or make biodiesel without killing yourself.

A future hydrogen economy could use the gas as an energy carrier As this method doesn't produce oxygen which needs to be kept separate from hydrogen, safety from explosion of the two gases is much less of a problem with electricity in the national grids carried by ageing cables, it would be useful to replace them by passing the hydrogen along gas pipes used currently for natural methane gas.

Not much use in generating useful energy when its needed BUT hugely successful at sucking up all that lovely government provided subsidy moolah!!!

That's why there are two distinct ways of getting useful work from the Sun, photovoltaic which utilises the tinier energy of Light to convert to electricity, and thermal panels which use the much bigger molecule moving power of beam Heat from the Sun to convert water to heat.

So the return we get from different energy sources can be a useful measure when choosing which to build into our energy mix, telling us how much energy to expect from them.

Energy Star Database The Energy Star database on power consumption is much more useful.

Non-hydro «renewable» electrical energy is also more expensive to produce from a system viewpoint than most fossil fuel energy; non-hydro «renewable» sources have a much shorter useful life and operate for much less of each year at much less of their rated capacity.

Simple energy models such as the one presented seem much more useful in developing a theoretical understanding of these processes which remain unsolved in a realistic understanding of the limits of current sceince.

I do think it is not useful to expend too much energy on specific issues with McIntyre until they get traction in the mainstream media.

Retiring fossil fuel is technically just as feasible as replacing ozone - depleting chemicals, given the wide range of technologies for generating useful energy, but politically much tougher.

We have to look at the whole picture: how much energy went into the things we make, how much energy it takes to run them, how appropriate is the energy source for the purpose, how long it lasts, and what happens at the end of its useful life.

«As of 1970, solar energy was impractical because the cells cost way too much, were very inefficient at capturing sunlight, and had fairly short useful lives.

Most people probably don't have a good handle on just how much energy we use, but it is one of the few other values in the right ballpark to be a useful comparison point.