downstrike
Language: English
Part of speech: noun
Forms: form: downstrikes
Etymology: From down + strike.
Senses: examples: text: Seventeen hundred downstrikes of lightning later, destruction reigns over southwest Oregon.
ref: 1994, David A. Perry, Forest Ecosystems, →ISBN, page 105:
text: Lightning downstrikes became visible as it crossed Beekman Ridge south of Butte Falls.
ref: 2014, Lloyd Holm, A Mountain of Many Names, →ISBN:
text: These storms typically arrive in the afternoon, building incredible cloud banks that can unleash rapid-fire lightning strikes. Cells often will hover and send forth dozens of downstrikes in a concentrated area, particularly in areas like the Valle Caldera.
ref: 2016, Kai Huschke, 50 Hikes in Northern New Mexico (Explorer's 50 Hikes), →ISBN:
glosses: A bolt of lightning that touches ground.
examples: text: Besides forming new cores, arcs may also form branches, and "downstrikes" are liable to be particularly troublesome.
ref: 1959, Electrical Times - Volume 135, page 355:
text: When a downstrike is established, the longer arc in parallel dies away rapidly and the process appears on oscillograms as a sudden reduction in arc voltage.
ref: 1959, Proceedings of the Institution of Electrical Engineers:
text: This was prevented by reducing the space between the plates in that portion of the chute, so that when downstrikes occurred tie new arc core remained under control and returned up into the chute again.
ref: 1959 -, The Electrical Review - Volume 164, Issues 10-17, page 447:
text: These "downstrikes" were recorded with an electromagnetic oscillograph and a high-speed camera, and now a good correlation exists between the two records.
ref: 1962, Transactions of the American Institute of Electrical Engineers, page 204:
topics: business
electrical
electrical-engineering
electricity
electromagnetism
energy
engineering
natural-sciences
physical-sciences
physics
glosses: A (usually unintended) branch of current that arcs downward to ground.
examples: text: Attacker executes a downstrike. Defender performs a two-hand catch, blocks, rotates through and performs an elbow-break with accompanying shoulder dislocation.
ref: 1977, Michael D. Echanis, Knife Self-Defense for Combat, →ISBN, page 34:
text: Its blades gleam with stolen light; the long sword slips up to Jodan to block their downstrike.
ref: 2013, Ian McDonald -, King of Morning, Queen of Day, →ISBN:
text: There were two men left by the rail and Hob whirled to take them; his sword swung up and hovered an instant before the downstrike.
ref: 2017, Douglas Nicholas, Three Queens in Erin: A Novel, →ISBN, page 22:
glosses: A blow by a hand or weapon that occurs with a downward striking motion.
examples: text: How the guitarist chooses to create the differences between the accented and unaccented notes has usually been left up to the player, although it is usual for players to use a downstrike (apoyando) for an accented tone and an upstroke (tirando) for an unaccented tone.
ref: 1985, John Schneider, The Contemporary Guitar, →ISBN, page 117:
glosses: A downward plucking motion on a stringed instrument.
examples: text: It is sort of like paying a carpenter for the downstrike of his hammer and saying the upstroke is on his on time.
ref: 1965, United States Congress Senate Committee on Labor and Public Welfare, Hearings, page 185:
text: On the subject of environments, our anatomically contoured houndstooth design provides exceptional traction on all terrains and in all weather conditions. What's more, the studs have a unique flex action: they automatically release any turf they may have picked up on downstrike.
ref: 1982 -, Women's Sports - Volume 4, Issues 7-12, page 64:
text: 1 . Full pump card. 2. Three strokes confirm pumpoff. 3. Power shutotf at mid-downstroke. 4. Pumping unit stops at midstroke, restart will be made in downstrike.
ref: 1985, Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers:
text: Shaft 24a carried the back check 24 for checking the downstrike of its related hammer 22.
ref: 1988, WS Finholm, Piano key action: US Patent 4,774,868:
text: Because the pressure is a steady, controlled flow, the available tonnage of a hydraulic press brake is the same at all points during the downstroke (Figure 1C-9). The ram can also be instantly stopped, anywhere during the downstrike, by simply releasing the foot pedal.
ref: 1988 -, Orville D. Lascoe, Handbook of Fabrication Processes, →ISBN, page 25:
glosses: A downstroke; a downward movement that terminates in striking something.
examples: text: These machines had straight-line keyboards and a semicircular downstrike typebasket that made for easy visibility by the typist.
ref: 1985, Frank T. Masi, The Typewriter Legend, page 67:
text: Oak tables displayed platoons of typewriters: downstrike typewriters, upstrike typewriters, vintage World War I typewriters, turn-of-thecentury typewriters—a 1901 Armstrong, a Densmore 1, a brass 1881 Hamilton Automatic, even an 1877 Sholes & Glidden in its case --each perfect in its kind, primed and polished so the metal shone.
ref: 2011, Allegra Goodman, The Cookbook Collector, →ISBN, page 25:
text: Though it is classified as a posterior downstrike typewriter, with its typebars positioned behind the platen, the Waverley offers much more than one classification can possibly convey.
ref: 2017, Typewriters: Iconic Machines from the Golden Age of Mechanical Writing, →ISBN:
glosses: A type of manual typewriter that causes the letters to print on the downstroke of the keys and retract as the key rises.
examples: text: My invention relates to pianofortes of the general character embodied in my United States Letters Patent No. 2,377,582, issued June 5, 1945, and wherein is disclosed and claimed a horizontal, downstrike hammer action particularly adapted, although not necessarily, for use in a lightweight, portable piano.
ref: 1952, SC Shill, Piano action: US Patent 2,620,700:
text: Sizes now available in vertical downstrike balers are: 72 inches, 60 inches and 36 inches.
ref: 1974, Paper Board Packaging - Volume 59, Issues 7-12, page 95:
text: After loading in a 15 MN downstrike press, providing 168 MPa, a volume reduction by a factor of 4.6 is achieved.
ref: 1985, International Atomic Energy Agency, Management of cladding hulls and fuel hardware:
glosses: A variety of various devices that operates primarily by a downward striking action.
examples: text: I have marked the accented syllable by the Downstrike, leaving the unaccented ones to the Upstrike
ref: 1911 Jan-Mar, OG Sonneck, “" Caractacus" Not Arne's Caractacus”, in Sammelbände der Internationalen Musikgesellschaft, volume 12, number 2:
text: These figures are rendered as usual in Arabic letters and, as is well known, these are especially apt to confound the figures for 10 and 50 by a wrong (or lacking) puctuation...and those for 3 and 8 (8 being written as ح and 3 by the same letter but with an incomplete downstrike م).
ref: 1954, Johannes Hendrik Kramers, Analecta Orientalia: posthumous writings and selected minor works:
text: In hypothermia, the downstrike of QRS on an ECG is called the 'J' point.
ref: 2009, Lori Schumacher, Cynthia C. Chernecky, Critical Care and Emergency Nursing, →ISBN, page 96:
glosses: A line that is drawn with a downward stroke.