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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]
It is an active pump that generates a proton concentration gradient across the inner mitochondrial membrane, because there are more protons outside the matrix than inside. The difference in pH and electric charge (ignoring differences in buffer capacity) creates an electrochemical potential difference that works similar to that of a battery or ...
A harmonium or pump organ is a reed organ that generates sound with foot- or hand-pumped bellows. Harmonium may also refer to: Harmonium (fictional creature), a creature in the 1959 novel The Sirens of Titan; Harmonium (poetry collection), a 1923 collection of poetry by Wallace Stevens; Hooke's atom or harmonium, an artificial helium-like atom
On the organ and tissue scale in mammals and other animals, examples include the circulatory system, the respiratory system, and the nervous system. On the micro to the nanoscopic scale, examples of biological systems are cells , organelles , macromolecular complexes and regulatory pathways.
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 ...
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]
Mar. 4—A pump organ more than a century old is looking for a new home, with proceeds from the sale going to one of Tahlequah's most historic homes. Board members for the Thompson Home said they ...
In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. [1] In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which has a specific ...