Results 11-20 of 78 sorted by author
11[June 1783] (Adams Papers)
...of the Earth. Break the Stone to Pieces, and each Morcel retains two Poles, a north and a south Pole, and does not loose its Virtue. The Magnetic Effluvia are too subtle, to be seen by a Microscope, yet they have great Activity and Strength. Iron has a Sympathy with Magnatism and Electricity, which should be examined by every Experiment, which Ingenuity can devise.
...he Seperated these parts, and found in one of them a Soft Substance, consisting of innumerable membranes of a retiform appearance, which constitute the Animal part of the shell, and through a Microscope exhibit proofs of a vacular Structure. This membranous Substance, is a continuation of the tendinous fibres, by which the animal is fixed to the Shell, the hardness of which is owing...
.... Break the stone to pieces, and each morsel contains two poles, a north and a south pole, and does not loose its virtue. The magnetic effluvia are too subtle to be seen by a microscope; yet they have great activity and strength. Iron has a sympathy with magnetism and electricity, which should be examined by every experiment, which ingenuity can devise. Has it been tried, whether the magnet...
...it is, Seems to be, the Cause of Life, or at least of the continuance and Support of it, in the larger Animals. whether the Air, in any Similar manner, Supports the Animalcules which We discover by Microscopes, in almost every kind of substance I know not.
Our terrestrial Chymists have a great Controversy to decide between The Spiritualists and the Materialists. Will your Teliscopes, Microscopes Incision Knives and Analyses, ever penetrate to the original Atoms, the Smallest particles of which this great chymical process is composed?
16Friday June 1st. 1787. (Adams Papers)
At 11, we had another lecture upon the optical instruments; the solar microscope,The solar microscope was mounted on a window shutter and used in a darkened room; a mirror reflecting sunlight through the instrument projected the image of the specimen on the wall (David P. Wheatland and I. Bernard Cohen,
172d. (Adams Papers)
through the microscope, and the magic Lantern, and the camera obscura, that something got broke, and Mr. Williams, shew nothing more after it. Weather very warm, several of us, bath’d in the River this afternoon.
18[June 1787] (Adams Papers)
At 11, we had another lecture upon the optical instruments; the solar microscope,The solar microscope was mounted on a window shutter and used in a darkened room; a mirror reflecting sunlight through the instrument projected the image of the specimen on the wall (David P. Wheatland and I. Bernard Cohen,
of the great man seems to look through the parental microscope. If the flattery of my Vanity, constituted my happiness, I could not possibly wish for higher gratification; but you know what value I am apt to set upon my own opinions; when others go beyond my own...
of them all—ascertain where and by whom they were made—Examine as far as you may be permitted to the construction of them—Let not the Telescope, the Microscope, the Air–pump, the Electrical Machine, the Sextant, the repeating Circle, the Theodolite, nor any other of the Instruments which you will see used to explain the Lectures and experiments escape your most inquisitive Scrutiny—Study them...