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derivometer

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1
Variometer - Wikipedia
A variometer – also known as a rate of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity ... en.wikipedia.org
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derivometer, n. meanings, etymology and more | Oxford English ...
The earliest known use of the noun derivometer is in the 1840s. OED's earliest evidence for derivometer is from 1842, in Mechanics' Magazine. derivometer is a ... www.oed.com
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The Gerber Derivimeter, the Ultimate Tool. - Instructables
This tool was used to find the value of derivatives of graphs in the 1950s when all the graphs were on paper. The tool was invented by Joseph Gerber an ... www.instructables.com
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derivometer
deriˈvometer (dɛrɪˈvɒmɪtə(r)) [a. F. dérivomètre, f. dériver to drift (see derivation2) + -ometer.] An instrument invented to show a ship's lee-way.1842 Mech. Mag. XXXVII. 84 Another invention of M. Clement's, which he calls a Derivometer, is an instrument to ascertain a ship's leeway..When at ancho... Oxford English Dictionary
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VARIOMETER Definition & Meaning - Merriam-Webster
1. an instrument for measuring magnetic declination 2. an aeronautical instrument for indicating rate of climb www.merriam-webster.com
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Variometer 101 - Wings & Wheels
Simply put, it's a special instrument that measures the rate of climb or descent of the glider. Think of it as a helpful assistant for the pilot ... wingsandwheels.com
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derive
derive, v. (dɪˈraɪv) Forms: 5 dir-, di-, dyryve, 5–6 deryve, 6 -ryfe. [a. F. dérive-r (12th c. in Littré = Pr., Sp. derivar, It. derivare), ad. L. dērīvāre to lead or draw off (water or liquid), to divert, derive (words), f. de- I. 2 + rīvus brook, stream of water. There are 4 distinct verbs dériver... Oxford English Dictionary
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It finds the derivative: The Ott Derivimeter (1930s) - YouTube
The Ott Derivimeter, an instrument for finding the derivative of a curve drawn on paper. Sold by the Ott company in the early 20th century, ... www.youtube.com
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CN2550720Y - Vernier derivometer - Google Patents
The utility model relates to a vernier derivometer for detecting levelness and verticality of detection target, comprising a group of division board set ... patents.google.com
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VARIOMETER Definition & Meaning - Dictionary.com
noun · Electricity., · an instrument for indicating a change in a component of a magnetic field vector, especially one related to the earth's magnetic field. www.dictionary.com
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Variometers - xp-soaring
Glider varios are all derivatives (pun intended) of the original aviation vertical speed indicator, also known as the "rate of climb" instrument. xp-soaring.github.io
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Gerber Derivimeter - National Museum of American History
Description: This instrument has a black plastic base with two clear plastic or glass discs inset in the center. The lower disc has a grid of lines marked ... americanhistory.si.edu
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