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A Victorian-era pump organ A smaller variety of pump organ A Mason & Hamlin pump organ A pump organ. The harmonium was considered by Curt Sachs to be an important instrument for music of Romanticism (1750s–1900), which "vibrated between two poles of expression" and "required the overwhelming power and strong accents of wind instruments". [2]
The Indian harmonium is derived from reed organ designs developed in France. Originally, these were large instruments, designed to be played sitting on a chair, which allowed one to pump the instrument using foot pedals. [4] Over time, Europeans designed smaller harmoniums, like the guide-chant, which included manually pumped bellows. [5]
Diffusion vs. Transport. In biology, an ion transporter is a transmembrane protein that moves ions (or other small molecules) across a biological membrane to accomplish many different biological functions, including cellular communication, maintaining homeostasis, energy production, etc. [1] There are different types of transporters including pumps, uniporters, antiporters, and symporters.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Musicians with cornua and a water organ, detail from the Zliten mosaic, 2nd century CE. The water organ or hydraulic organ (Greek: ὕδραυλις) (early types are sometimes called hydraulos, hydraulus or hydraula) is a type of pipe organ blown by air, where the power source pushing the air is derived by water from a natural source (e.g. by a waterfall) or by a manual pump.
President Joe Biden's top aides are discussing whether preemptive pardons to current and former public officials who may be targeted by the incoming Trump administration should be considered, but ...
The Estey Organ Company was an organ manufacturer based in Brattleboro, Vermont, founded in 1852 by Jacob Estey.At its peak, the company was one of the world's largest organ manufacturers, employed about 700 people, and sold its high-quality items as far away as Africa, Great Britain, Australia, and New Zealand.
A man who kidnapped and sexually assaulted a Northern California woman in what became widely known as the “Gone Girl” kidnapping has been charged with two 15-year-old home invasion sexual ...