Work out how that change is modified by distance (radiative power varies with the fourth power of temperature and
energy density does down with the second power of distance.
Arguments about
energy density do not negate the net energy savings of solar energy.
Not exact matches
«The thing about a 350 kW charger is it doesn't actually make a ton a sense — unless you've got a monster battery pack or have like a crazy high C - rate, in which case your
energy density is going to be poor.»
The answer to that turns out to be «definitely maybe»: If general relativity can be extended without modification into arbitrarily high
energy densities, then yes — we can show that time doesn't extend indefinitely far backwards.
Packed with antioxidants that enhance your mood, health and
energy level There are several different «grades» of matcha green tea powder Which are determined by the quality of the appearance processing method and ingredients used: The color of the tea The texture, quality and
density The quality of the product The fineness of the powder How it was ground up Treatment prior to processing The Problem with Today's Green Superfood is you Don't know what's Inside.
We now know the shape of the universe (flat) and the average
density of matter and
energy (critical
density), and yet we don't know what will happen.
Conversely, batteries have high
energy density and low power
density, which means they can last a long time, but don't deliver a large amount of
energy quickly.
To
do this, Skyllas - Kazacos has found an electrolyte that allows more vanadium to dissolve, thus doubling the
energy storage
density.
We don't know for sure, but of the, what I call, baryonic matter, which is 5 percent of the total mass
energy density of the universe, one would guess about 90 or 95 percent of it, is in the form of ionized gas called plasma.
Among 6,489 people ages 8 to 20 years who participated in NHANES between 2005 and 2010 and had a bone
density scan using dual -
energy X-ray absorptiometry, or DXA, 159 subjects used stimulants and 6,330
did not.
They have larger muscles than the forelimbs, along with a greater
density of mitochondria — the cellular components which convert nutrients into
energy — suggesting they might be capable of
doing quite a bit of work.
This paper reports that we've reached one of the highest
energy densities stored per gram in a polymeric system, and how we
did it.»
The findings from this study,
done through DOE's Joint Center for
Energy Storage Research (JCESR), could help scientists design a safe and stable metallic lithium anode and ultimately pave the way for the practical use of high - energy - density battery systems for electric vehicles and storing renewable e
Energy Storage Research (JCESR), could help scientists design a safe and stable metallic lithium anode and ultimately pave the way for the practical use of high -
energy - density battery systems for electric vehicles and storing renewable e
energy -
density battery systems for electric vehicles and storing renewable
energyenergy.
«Because a plasma is inherently such a high
energy density material, you don't destroy it.
The
energy density of the work being
done at LHC is phenomenal.
If a food doesn't grow in the environment where you dwell, the food energetics take is that it's not going to give you the right kind of
energy that you need, regardless of the nutrient
density.
A calorie doesn't tell you the nutrient
density in a food — it only tells you how many units of
energy are in it.
It's a very popular PDF that we sell for about, I think it's about $ 27 over at greenfieldfitnessystems.com, and in that program I tried to grab all the different research studies and all the different things you could steam with exercise, right, like fat loss, and VO2max and mitochondrial
density, and one of the things that I
do in there is I try to stimulate the phosphagenic
energy system.
I often work with clients who list weight loss, bone
density,
energy, or knowing what to
do as their top goals.
Vitamins and minerals also support the work being
done by proteins to increase muscle and bone
density, blood volume, to reduce fatigue, injury, and to increase one's
energy.
Fruit and starch have similar
energy density and so frugavore and starchavores don't need the huge small and large bowel, but they
do need more than carnivores which eat very high calorie
density food.
Alternatively, they don't adapt their approach as they progress (e.g. they don't transition to a more nutrient - dense lower
energy density approach once their blood sugars have stabilised on a lower carb diet).
Do energy density and dietary fiber influence subsequent 5 - year weight changes in adult men and women?
Nevertheless, the associations of the intake of plain water with dietary fiber intake (positive),
energy density of foods, and total and added sugars (inverse)
do suggest different dietary selections in relation to plain water intake.
Let's
do a little back - of - the - envelope calculation: Assuming that the heating unit has an efficiency close to 1.0 and that automotive diesel has an
energy density of ~ 39 MJ / l which translates to ~ 10kWh / l.
The overall
energy density of this formulation may be a bit lower due to the lower fat content, but these dogs work in short, very intense bursts, and consequently
do not need consistently high calorie intake.
At first I didn't think I had the
energy to accomplish it with the same detail and
density.»
Ethanol doesn't have the
energy density for jet flight and bio-diesel has a high gel point, which is bad news for planes that spend a good part of their time in the chilly 30,000 foot zone.
(
Do the physics on how much
energy it takes to compress air to a very high
energy density, how much you lose in heating the air and how much of that heat is lost in the storage itself, how much you use when air rushes through a turbine like water, but unlike water running down hill whose speed / pressure stays the same, the compressed air loses force continually.
what exactly is it that determines the probability of an
energy transition such as an electron emitting or absorbing a photon (besides
densities and occupancies of states and incident photons, etc.)-- and how
does refractive index affect this (it has to because the Planck function is proportional to n ^ 2 — has to be in order to satisfy 2nd law of thermo...)-- and
does it make sense to use an k, E diagram when electrons are not actually propagating as plane waves — I mean, what is the wavevector when the waveform is not a plane wave; is k a function of space in atomic orbitals?
Corn grain ethanol is not a solution due to low net
energy gain, GHG emissions, environmental degradation (e.g., water pollution and soil loss), and food supply issues) and cellulosic ethanol doesn't look favorable due to
energy density issues and GHG emissions.
I was trying to estimate the mining footprints of solar and nuclear, and came up with some very tentative rough estimates that ore input for solar
energy might have an
energy density (per unit mass) ~ 5 to 80 times coal, while nuclear (convential US fuel cycle) may be ~ 20 times coal — on the solar side, this doesn't include some balance of system components, and on the nuclear side, it only includes the U, but on the solar side, the actual
energy density could get much higher with recycling of the same material into multiple successive generations of solar
energy devices, and on the nuclear side, breeder reactors.
If you don't compress it, the
energy density of hydrogen fuel is quite small.
The
energy storage
density in these solutions is much less than fossil fuels and with what
energy source
do you manufacture the H2?
ie
does a slightly lower
density of air mean a slightly lower ground level temperature (temperature normally decreases with height at the lower air
density), so that in reality adding CO2 and subtracting more O2 actually causes miniscule or trivial global COOLING, and the (unused) ability of the changed atmosphere to absorb radiation
energy and transmit it to the rest of the air is overruled or limited by the ideal gas law?
The key drivers of
energy efficiency appear to be less about
density and more about walkability... You can't have walkability at suburban
densities, but you don't need to be New York or Hong Kong either.
But note that given the use and occupancy of any individual dwelling is so variable, we
do not propose that we base the internal heat gains on actual appliance
energy use, but instead recognise that the make - up of household
energy use and occupant
density leads to a trend for internal heat gains to follow a non linear pattern with respect to dwelling size.
The thing is that we
do not have, high
energy density, long life, electrical storage devices.
In practice, except in the vicinity of strong storms, air moves nearly horizontally and
does not mix across
energy densities (isentropes) which increase upwards.
One has to look to the other macroscopic force which is conspicuously absent from the GHG assertions (can't call the «equations» because such don't exist), gravity, to explain the 3 %, in the case of Earth, and 125 %, in the case of Venus, greater surface than orbital temperatures (take those figures to the 4th power for equivalent
energy densities) seen in all planetary atmospheres, and indeed all gravitational wells.
We use fossil fuels precisely because they have very high
energy density — that is, they contain lots of heat
energy in concentrated form; wind and solar
do not.
Example: A car has an over all center of balance BUT all the individual materials
do as well dependant on the
density and mass as to how much
energy is stored in motion.
As a related element in the
energy density question, Bryce
does not — in anyway — account for depletable vs renewable.
Also, your world calculations seem to be
done using a constant
energy density of 3.6 boe / t for coal.
Does not your thought experiment fail, because most of the molecules in the atmosphere are all at the same heat (kinetic
energy), while the difference in temperature with altitude (on a thermometer) is simply an effect of the number of molecules you meet (pressure and
density).
The solution technically doesn't have to be scale invariant there but the
density of the gas and vertical distribution of
energies is, in the ergodic sense or for very large areas $ A$.
So it's all gases at greatest
density will be
doing the same thing around the planet at the same time (*) and as these change with differences in
density in the play between gravity and pressure and kinetic and potential from greatest near the surface to more rarified, less dense and absent any kinetic to write home about the higher one goes, then,
energy conservation intact, the hotter will rise and cool because losing kinetic
energy means losing temperature, thus cooling they which began with the closest in
density and kinetic
energy as a sort of band of brothers near the surface will rise and cool at the same time whereupon they'll all come down together colder but wiser that great heights don't make for more comfort and giving up their heat will sink displacing the hotter now in their place when they first went travelling.
(In case someone
does not see why internal
energy is proportional to
density it is because if stuff has
energy, and you have more of the same kind of energetic stuff, you must have more
energy.)
I
did not read that «the idea that gravity by itself can create a permanent gradient of temperature in an atmosphere» other then the idea that atmospheric
density by itself creates greater heat capacity, thus a longer residence time for
energy to saturate while insolation continues unabated.
It comprises a number for the amount of
energy required for the necessary work
done (in Joules) to lift 1 kg of mass in a gas to a height at which it can become 1 degree kelvin cooler due to the decrease in
density with height.