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First Lessons in Natural Philosophy: For Beginners (1881)
Joseph C. Martindale
No preview available - 2009
absorb heat angle of incidence ascend attraction balance ball balloon becomes body bottom bright called causes centre of gravity centrifugal force changed clouds cohesion cold color conductor of heat cool degrees of heat earth electricity fall farther feel filled fire force freezing friction fulcrum glass heat expand heavier hence human voice hundred inches inclined plane iron kind of lever latent heat lighter liquid looking-glass lower valve magnet melted metals miles moisture moon motion move night noise objects particles passes pendulum poor conductor pounds prevent produced pupil quicksilver radiator rapidly rays of light reflect rise screw see-saw shown in Fig sink snow solid sorbs specific gravity steam stone strike substance surface takes place temperature thirty-two degrees tricity tube upper valve vacuum vapor is condensed vessel wagon warm warmer water boil waves of sound weather weight wheel wind winter wood
Page 157 - ... the angle of reflection is always equal to the angle of incidence, the image for any point can be seen only in the reflected ray prolonged.
Page 174 - Fig. 85, where F represents the fulcrum, P the power, and W the weight. A Lever of the Second Kind is one in which the weight is between the power and the fulcrum ; as in Fig.
Page 25 - bow " in the cloud, as a token that the world should no more be destroyed by a flood of waters.
Page 174 - Fig. 43, it is termed a lever of the third kind. 1. Many examples occur in practice of levers of the first kind. A crowbar, used to raise stones from the earth, is an instance of this sort ; so is a handspike of any kind used in the same way.
Page 43 - ... water, and warm to the hand that was in the cold water.
Page 17 - When do we see all of that part of the Moon on which the Sun shines ? When the Moon is round, and the whole of it seems to shine. What is the Moon then called ? It is called the full Moon. Why do we not always see the full Moon ? Because sometimes a part of its bright side is turned away from us.
Page 153 - ... the specific gravity of the oil is less than that of the water...