Lectures on Select Subjects in Mechanics, Hydrostatics, Pneumatics, Optics, and AstronomySherwood and Company Paternoster Row, 1825 - Всего страниц: 463 |
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Стр. xix
... must take place in a wedge for cleaving wood ; but then , I happened not to think of the screw . - By means of a turn- ing lathe which my father had , and sometimes used , and a little knife , I was enabled LIFE OF THE AUTHOR . xix.
... must take place in a wedge for cleaving wood ; but then , I happened not to think of the screw . - By means of a turn- ing lathe which my father had , and sometimes used , and a little knife , I was enabled LIFE OF THE AUTHOR . xix.
Стр. 7
... wedge . The plates thus united , should be placed erect in a shallow trough of colour- ed water , and in a few moments a curved line will be formed called an hyperbola . It may be proper to state , that the figure is more im- mediately ...
... wedge . The plates thus united , should be placed erect in a shallow trough of colour- ed water , and in a few moments a curved line will be formed called an hyperbola . It may be proper to state , that the figure is more im- mediately ...
Стр. 54
... wedge , and the screws.28 They are called mechanical powers , because they help us mechanically to raise weights , move heavy bodies , and overcome resistances , which we could not effect without them . 1. A lever is a bar of iron or ...
... wedge , and the screws.28 They are called mechanical powers , because they help us mechanically to raise weights , move heavy bodies , and overcome resistances , which we could not effect without them . 1. A lever is a bar of iron or ...
Стр. 66
... wedge , where the resistance gives way only on one side ) the machine and pillar would be in equilibrio , when the power applied at G F was to the weight of the pillar as G F to CD ; and if the power be increased , so as to overcome the ...
... wedge , where the resistance gives way only on one side ) the machine and pillar would be in equilibrio , when the power applied at G F was to the weight of the pillar as G F to CD ; and if the power be increased , so as to overcome the ...
Стр. 69
... wedge at its back ABCD , where the power is applied : EF is the depth or height of the wedge : DF the length of one of its sides , equal to CF the length of the other side ; and OF is its sharp edge , which is entered into the wood in ...
... wedge at its back ABCD , where the power is applied : EF is the depth or height of the wedge : DF the length of one of its sides , equal to CF the length of the other side ; and OF is its sharp edge , which is entered into the wood in ...
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