The speed of the ball-thanks to opposition from the air-will not go on increasing forever. Rather, what will happen is seen in bodies of very little weight falling through no great distance; I mean, a reduction to equable motion, which will occur also in a lead or iron ball after the descent of some thousands of braccia. This bounded terminal speed will be called the maximum that such a heavy body can naturally attain through the air...
Galileo GalileiRelated topics
air attain ball body descent distance falling forever great heavy increasing iron lead maximum mean motion opposition reduction seen speed terminal weightRelated quotes
Your wickedness makes you as it were heavy as lead, and to tend downwards with great weight and pressure towards hell; and if God should let you go, you would immediately sink and switfly descend and plunge into the bottomless gulf, and your healthy constitution, and your own care and prudence, and best contrivance, and all your righteousness, would have no more influence to uphold you and keep you out of hell, than a spider's web would have to stop a fallen rock.
Jonathan Edwards (theologian)
I confess to a rare problem-gynekinetophobia, or the fear of women falling on me-but this is a rather mild illness compared with many affluent suburbanites, who have developed an almost total zoophobia, or fear of anything that moves. It is, as any traveller can confirm, a complaint best developed in the affluent North American, and it seems to be part of blue toilet dyes, air fresheners, lots of paper tissues, and two showers a day.
Bill Mollison
Great drama, drama that may reach the alchemical level, must have dimension and its relevance will take care of itself. Writing about AIDS rather than the cocktail set, or possibly the fairy kingdom, will not guarantee importance.... The old comment that all periods of time are at an equal distance from eternity says much, and pondering on it will lead to alchemical theatre while relevance becomes old hat.
Robertson Davies
No mockery in this world ever sounds to me so hollow as that of being told to cultivate happiness. What does such advice mean? Happiness is not a potato, to be planted in mould, and tilled with manure. Happiness is a glory shining far down upon us out of Heaven. She is a divine dew which the soul, on certain of its summer mornings, feels dropping upon it from the amaranth bloom and golden fruitage of Paradise.
Charlotte Brontë
Now, since the time of Newton there had been a debate about whether light was a wave---that is, a traveling disturbance in some background medium---or a particle, which travels regardless of the presence of a background medium. The observation of Maxwell that electromagnetic waves must exist and that their speed was identical to that of light ended the debate: light was an electromagnetic wave.
Lawrence M. Krauss
