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" ... horizontal windmill, little more than one sail can be acting at once : whereas, in the common windmill, all the four act together : and, therefore, supposing each vane of a horizontal windmill, of the same dimensions as each vane of the vertical,... "
An Introduction to the Theory and Practice of Mechanics: In Five Books ... - Σελίδα 265
των William Marrat - 1810 - 455 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

An Experimental Enquiry Concerning the Natural Powers of Water and Wind to ...

John Smeaton - 1760 - 96 σελίδες
...oblique one of the fame dimenficns ; but that in an horizontal windmill, little more than one fail can be acting at once : whereas in the common windmill, all the four aft together : and therefore, fuppofing each vane of an horizontal windmill, .of the fame dimenfions...

A Treatise of Mechanics: Theoretical, Practical, and Descriptive, Τόμος 1

Olinthus Gregory - 1806 - 590 σελίδες
...oblique one of the fame dlfnenfions ; but that in an horizontal windmill little more than one fail can be acting at once : whereas in the common windmill, all the four a£t together ; and therefore, fuppofing each vane of an horizontal windmill to be of the fame fize...

Philosophical Transactions of the Royal Society of London: From ..., Τόμος 11

Royal Society (Great Britain) - 1809 - 778 σελίδες
...capable of a less power, VOL. xi. . 3 B than an oblique one of the same dimensions ; but that in a horizontal windmill, * little more than one sail can...at once : whereas in the common windmill, all the 4 act together : and therefore, supposing each vane of a horizontal windmill, of the same dimensions...

The Miscellaneous Papers of John Smeaton, Civil Engineer, &c. F.R.S ...

John Smeaton - 1814 - 276 σελίδες
...oblique one of the fame dimenfions ; but that in an horizontal windmill, little more than one faiL can be acting at once : whereas in the common windmill, all the four act together : and therefore, fuppofing each vane of an horizontal windmill, of the fame dimenfions as each vane of the vertical,...

A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Τόμος 2

Olinthus Gregory - 1815 - 582 σελίδες
...directly opposed to the wind, is capable of a less power than an oblique one of the same diriiehsions; but that in an horizontal windmill little more than...each vane of an horizontal windmill to be of the same site with that of a vertical one, it is manifest that the power of a vertical mill will be four times...

A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Τόμος 2

Olinthus Gregory - 1815 - 632 σελίδες
...sail, when directly opposed to the wind, is capable of a less power than an oblique one of the snme dimensions; but that in an horizontal windmill little...windmill, all the four act together; and therefore, supposiug each vane of an horizontal windmill to be of the same size with that of a vertical one, it...

Encyclopaedia Perthensis; Or Universal Dictionary of the Arts ..., Τόμος 14

1816 - 762 σελίδες
...an oblique one of the fame dimenfions; but that in an horizontal-windmill liti'.e more than one fail can be acting at once: whereas, in the common windmill, all the four -ict together -r and therefore, fuppofing each vane of an horizontal windmill to be of the lame fize...

A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Τόμος 2

Olinthus Gregory - 1826 - 606 σελίδες
...to the wind, is capable of a less power than an oblique one of the same dimensions ; but that in a horizontal windmill little more than one sail can...act together ; and therefore, supposing each vane of a horizontal windmill to be of the same size with that of a vertical one, it is manifest that the power...

Tracts on Hydraulics

Thomas Tredgold - 1836 - 288 σελίδες
...to the wind, is capable of a less power than an oblique one of the same dimensions ; but that, in a horizontal windmill, little more than one sail can...together : and, therefore, supposing each vane of a horizontal windmill, of the same dimensions as each vane of the vertical, it is manifest the power...

Professional Papers on Indian Engineering

1879 - 546 σελίδες
...to the wind, is capable of a less power than an oblique one of the same dimensions ; but that, in a horizontal wind-mill, little more than one sail can...act together : and therefore, supposing each vane of a horizontal wind-mill, of the same dimensions as each vane of the vertical, it is manifest the power...




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