A Descriptive and Historical Account of Hydraulic and Other Machines for Raising WaterScribner, Armstrong & Company, 1876 - 612 էջ |
From inside the book
Արդյունքներ 14–ի 1-ից 5-ը:
Էջ 13
... ди дх av die gleichzeitigen Änderungen dydt und .dx ... I w dz dt ди ·· dx + ду дх Quax ди ( dx + 3 * dx dt ) · ( dy + %% dy dt ) · ( dz + I w до 12+ ди dz dt ) = dx dy dz ду derart sein , daß der Rauminhalt дх bleibt , oder daß bei ...
... ди дх av die gleichzeitigen Änderungen dydt und .dx ... I w dz dt ди ·· dx + ду дх Quax ди ( dx + 3 * dx dt ) · ( dy + %% dy dt ) · ( dz + I w до 12+ ди dz dt ) = dx dy dz ду derart sein , daß der Rauminhalt дх bleibt , oder daß bei ...
Էջ 14
... ди до dv dw = = ду дх az = дл ду sein . Die letzten drei Ausdrücke sind aber nach ( 8 ) als Kennzeichen der wirbelfreien Bewegung erklärt worden . Wenn die Bewegung ein Ge- schwindigkeitspotential besitzt , so erfolgt sie also ...
... ди до dv dw = = ду дх az = дл ду sein . Die letzten drei Ausdrücke sind aber nach ( 8 ) als Kennzeichen der wirbelfreien Bewegung erklärt worden . Wenn die Bewegung ein Ge- schwindigkeitspotential besitzt , so erfolgt sie also ...
Էջ 21
... ди дл дх an den диди dx dx 2 + Du du dz dx dx2 2 anzusehen , der aber nur für den Mittelpunkt des Teilchens genau gilt . Für den Mittelpunkt der einen ( unteren ) Begrenzungsebene gilt statt seiner av ди дп дл = - J2 u dz 2 dz2 2 J2 w ...
... ди дл дх an den диди dx dx 2 + Du du dz dx dx2 2 anzusehen , der aber nur für den Mittelpunkt des Teilchens genau gilt . Für den Mittelpunkt der einen ( unteren ) Begrenzungsebene gilt statt seiner av ди дп дл = - J2 u dz 2 dz2 2 J2 w ...
Էջ 23
... ди ди + wou ) ди dou Jou η + дх дх Cy2 д + 02 ) , + u Iv +0 до ov div дх ду дх dy ? + 02 % ) , др ди I w + u + v дл g at дх ду да + w 1 ) − n ( % & w oy ου 7 g ot r low g 1 ) L. Navier , Paris , Mém . de l'académie 1823 + +1246 ) . dy ...
... ди ди + wou ) ди dou Jou η + дх дх Cy2 д + 02 ) , + u Iv +0 до ov div дх ду дх dy ? + 02 % ) , др ди I w + u + v дл g at дх ду да + w 1 ) − n ( % & w oy ου 7 g ot r low g 1 ) L. Navier , Paris , Mém . de l'académie 1823 + +1246 ) . dy ...
Էջ 30
... ди dtax - at ist . Gelingt es nun eine Funktion zu finden , für die p längs einer be- stimmten Fläche konstant wird , so kann man diese Fläche als freie Oberfläche unter unveränderlichem Luftdruck ansehen , wenn zugleich die Teilchen ...
... ди dtax - at ist . Gelingt es nun eine Funktion zu finden , für die p längs einer be- stimmten Fläche konstant wird , so kann man diese Fläche als freie Oberfläche unter unveränderlichem Luftdruck ansehen , wenn zugleich die Teilchen ...
Այլ խմբագրություններ - View all
A Descriptive and Historical Account of Hydraulic and Other Machines for ... Thomas Ewbank Դիտել հնարավոր չէ - 2015 |
A Descriptive and Historical Account of Hydraulic and Other Machines for ... Thomas Ewbank Դիտել հնարավոր չէ - 2015 |
A Descriptive and Historical Account of Hydraulic and Other Machines for ... Thomas Ewbank Դիտել հնարավոր չէ - 2015 |
Common terms and phrases
ancient apparatus application arts atmospheric attached Bazin bellows Bewegung blowing boiler bottom Boussinesq bucket century chain of pots chain pump chauss cistern close cock common Ctesibius cylinder daher daß der Spiegel descend described device diameter discharged double acting Druck Durchfluß Egypt Egyptian elevation employed engine eolipiles feet figure fire fire-engines fluid Forchheimer forcing pumps Formel fountains für Gefälle Geschwindigkeit Gleichung heat hence Heron's fountain Höhe hydraulic inches instrument invention latter lever liquid lower machines mechanical metal mode modern motion mouth observes orifice pipe piston placed Plutarch Pompeii pressure probably Querschnitt raising water Rohr Röhren Roman says screw side siphon Sohle Spiegel steam steam-engine stuffing box sucker supposed swape syringe Tiefe tion tube U₁ Umax upper vacuum valve vapor vessel Vitruvius Wasser Wert wheel Widerstand worin Zeit ди дх
Սիրված հատվածներ
Էջ 55 - There cometh a woman of Samaria to draw water : Jesus saith unto her, Give me to drink. (For his disciples were gone away unto the city to buy meat.) Then saith the woman of Samaria unto him, How is it that thou, being a Jew, askest drink of me, which am a woman of Samaria? for the Jews have no dealings with the Samaritans.
Էջ 86 - And they made their lives bitter with hard bondage, in mortar, and in brick, and in all manner of service in the field: all their service, wherein they made them serve, was with rigour.
Էջ 402 - For thou hast been a strength | to the poor, A strength to the | needy in his distress, 7. A refuge from the storm, a shadow | from the heat, When the blast of the terrible ones is as a | storm against the wall.
Էջ 56 - And he looked, and behold a well in the field, and, lo, there were three flocks of sheep lying by it; for out of that well they watered the flocks: and a great stone was upon the well's mouth.
Էջ 573 - For Tophet is ordained of old ; Yea, for the king it is prepared ; He hath made it deep and large: The pile thereof is fire and much wood ; The breath of the Lord, like a stream of brimstone, doth kindle it.
Էջ 393 - By his neesings a light doth shine, and his eyes are like the eyelids of the morning.
Էջ 87 - They also were the inventors of that peculiar sort of wisdom which is concerned with the heavenly bodies, and their order. And that their inventions might not be lost before they were sufficiently known, upon Adam's prediction that the world was to be destroyed at one time by...
Էջ 598 - Angels ken he views The dismal Situation waste and wild: A Dungeon horrible, on all sides round As one great Furnace flam'd, yet from those flames No light, but rather darkness visible Serv'd only to discover sights of woe, Regions of sorrow, doleful shades, where peace And rest can never dwell, hope never comes That comes to all...
Էջ 559 - ... twelve oxen, three looking toward the north, and three looking toward the west, and three looking toward the south, and three looking toward the east : and the sea was set above upon them, and all their hinder parts were inward. 26 And it was an hand breadth thick, and the brim thereof was wrought like the brim of a cup, with flowers of lilies : it contained two thousand baths.
Էջ 69 - The old oaken bucket, the iron-bound bucket. The moss-covered bucket which hung in the well. That moss-covered vessel I hail as a treasure; For often, at noon, when returned from the field, I found it the source of an exquisite pleasure, The purest and sweetest that nature can yield.