The first Keyboard-oriented power trio was the Scottish band 1-2-3 ( later Clouds ) in 1966.

Patterned after hard rock power trios such as Cream, the band, with Terry Knight's marketing savvy, developed its own popular style.

While one or more band members may sing, power trios usually emphasize instrumental performance and overall impact over vocals and lyrics.

The prototypical power trios were exemplified by late 1960s-era blues-rock / hard rock bands The Jimi Hendrix Experience, Cream, Grand Funk Railroad and The James Gang.

Well-known 1970s-era power trios include the Canadian progressive rock group Rush ; The American band out of Texas ZZ Top, the British heavy metal band Motörhead ; The Jam ; Robin Trower and The Police.

Other Latin rock power trios include Divididos, Invisible, A. N. I. M. A. L., Los Prisioneros and ( in their beginnings ) Leusemia.

Although power trios fell out of fashion in mainstream rock during the early 1980s, the rise of post-punk and indie rock in the later 1980s and throughout the 1990s featured many trios, such as grunge band Nirvana and pop-punk bands such as Green Day and Blink-182.

One of the biggest power trios of today is the British band Muse.

As power trios have one guitar, one bass and one drummer, this arrangement usually requires the guitarist to play both rhythm and lead parts.

The emphasis on guitar solos and crashing rhythm sections in the power trio contributed to the development of heavy metal, although some power trios would prefer hard rock labels.

The prototypical power trios were exemplified by The Jimi Hendrix Experience, Blue Cheer, Grand Funk Railroad and Cream, who popularized the format during the 1960s.

These three groups laid down the framework for all other subsequent power trios: extended improvisation, hyperamplification through walls of amplifiers and cabinets, and the use of effects ( such as delay, distortion, flangers, fuzz bass, wah pedals, etc.

Thereafter, other keyboard-oriented power trios also emerged such as Atomic Rooster, the guitar-less incarnations of Soft Machine and The Nice, and perhaps the most successful, Emerson, Lake & Palmer ( formed from Atomic Rooster and The Nice keyboard trios ).

Although none of these were ever particularly identified as such, the music that they created is influenced by, and follows the same musical format as, many of the pioneering power trios.

Some power trios also experimented with keyboards and sequencers in the studio, most notably the Canadian trio Rush, whose bassist-frontman Geddy Lee has often demonstrated his multi-instrumental capabilities on diverse rock albums such as 1977's A Farewell to Kings and 1985's Power Windows.

Although power trios fell out of fashion in mainstream rock during the 1980s, the rise of post-punk and indie rock in the 1980s and 1990s featured many trios.

Some power trios add to the fullness of their sound by using bass pedalboards, which are keyboards played by the feet.

This is seen, for instance, in Beethoven's trios, and was likely in part the result of the increase in the power and sonority of the piano that took place during Beethoven's career, making it more feasible for the piano to play independently in an ensemble.

The electric guitar playing of Jimi Hendrix ( a veteran of many American rhythm & blues and soul groups from the early-mid 1960s ) and his power trios, The Jimi Hendrix Experience and Band of Gypsys, has had broad and lasting influence on the development of blues rock, especially for guitarists.

The two shared a love for 1960s power trios like Cream, The Jimi Hendrix Experience, the James Gang and Mountain.

Key acts included Paul Butterfield ( whose band acted like Mayall's Bluesbreakers in Britain as a starting point for many successful musicians ), Canned Heat, the early Jefferson Airplane, Janis Joplin, Johnny Winter, The J. Geils Band and Jimi Hendrix with his power trios, The Jimi Hendrix Experience and Band of Gypsys, whose guitar virtuosity and showmanship would be among the most emulated of the decade.

The Tory leaders, he insinuates, are cynically using the Church as a political `` By-word '' to increase party friction and keep themselves in power.

Methods include simply looking at the night sky with the naked eye, using binoculars, and using a variety of optical telescopes of varying power and quality, as well as additional sophisticated equipment, such as cameras, to study light from the sky in both the visual and non-visual parts of the spectrum.

For example, if two characters are wrestling the relevant attribute is Strength ; a character could reveal a weapon, changing it to Warfare ; they could try to overcome the other character's mind using a power, changing it to Psyche ; or they could concentrate their strength on defense, changing it to Endurance.

Johnson attempted to make the most of the opportunities the position offered, using it as a springboard to higher honors, as the Governor's powers in the state were limited to offering mere suggestions on legislation ( with no veto power ), and managing the Bank of Tennessee and the penitentiary.

The majority of aircraft power their avionics using 14-or 28 ‑ volt DC electrical systems ; however, larger, more sophisticated aircraft ( such as airliners or military combat aircraft ) have AC systems operating at 400 Hz, 115 volts AC.

Such ideas are described as " Counter-Enlightenment " because they are contrary to the Enlightenment's ideal that humans have the capacity to make their lives and societies a heaven on earth using their own power and reason.

The graphite tubes are heated via their ohmic resistance using a low-voltage high-current power supply ; the temperature in the individual stages can be controlled very closely, and temperature ramps between the individual stages facilitate separation of sample components.

If enough electric power is available, cooling can be provided by conventional air conditioning using a heat pump.

This results in lower power consumption, longer battery life, and reduced heat over using a normal desktop part.

Unlike binary-addressed computer main memory, there is nothing in a disk drive that influences it to have a total capacity easily expressed using a power of 1024.

It is known by quick and complex moves, using mainly power, speed, and leverage for leg sweeps.

In the 19th century, Concord became a hub for the railroad industry, with Penacook a textile manufacturing center using water power from the Contoocook River.

Note that such engines may not produce their full rated power using 87 octane gasoline under all circumstances due to the delayed ignition timing.

Later on, previous to modern power electronics, process control systems for industrial applications were devised by mechanical engineers using pneumatic and hydraulic control devices, many of which are still in use today.

The same basic engine block can be used with different crankshafts, however, to alter the firing order ; for instance, the 90 ° V6 engine configuration, in older days sometimes derived by using six cylinders of a V8 engine with what is basically a shortened version of the V8 crankshaft, produces an engine with an inherent pulsation in the power flow due to the " missing " two cylinders.

The same engine, however, can be made to provide evenly spaced power pulses by using a crankshaft with an individual crank throw for each cylinder, spaced so that the pistons are actually phased 120 ° apart, as in the GM 3800 engine.

Constraints on many cosmological parameters can be obtained from their effects on the power spectrum, and results are often calculated using Markov Chain Monte Carlo sampling techniques.

** Solar air conditioning, air conditioning using solar power

After obtaining power, the vast majority of " idealistic " reformers gained huge possessions of state property using their positions in the government and became business oligarchs in a manner that appeared antithetical to an emerging democracy.

By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries.

To present a high-contrast display these models illuminated the LCD using a filament lamp and solid plastic light guide, which negated the low power consumption of the display.

With this low power consumption came the possibility of using solar cells as the power source, realised around 1978 by such calculators as the Royal Solar 1, Sharp EL-8026, and Teal Photon.

Discharging both barrels at the same time has long been a hunting trick employed by hunters using 8 gauge " elephant " shotguns, firing the two two-ounce slugs for sheer stopping power at close range.