United States or Pitcairn Islands ? Vote for the TOP Country of the Week !
He had given the best of himself, all his thoughts, illusions, hopes, endeavors, to his ideal of success, but his ambition had never been concentrated enough to serve as a lens through which the rays of his efforts might focus themselves into the single beam of devastating heat on which Paul counted so certainly to burn away the obstacles between himself and success.
This fluid separates the iris from the front of the lens. The animal should be approached slowly. It is best for the attendant who is familiar with the animal to hold it for the examiner. It is advisable on approaching the animal to stroke its face, and in the horse to brush its foretop away.
It is a significant fact that even in man, according to the high authority of Virchow, the beautiful crystalline lens is formed in the embryo by an accumulation of epidermic cells, lying in a sack-like fold of the skin; and the vitreous body is formed from embryonic subcutaneous tissue.
Then he widened the lens still further, and checked the coordinates at the bottom of the viewer. He knew that he was right. He had to be right. But this was no wild dream, this was something that could be proved beyond any question of error. Across the room he picked up the phone to Map Control. It buzzed interminably; then a sleepy voice answered. "The Map," Tom managed to say.
The British literally blasted their way through the German front and rearward positions. Vimy Ridge, dominating the coal fields of Lens, where thousands of French had fallen in the previous year, was captured by the Canadians. The terrific bombardment by British guns during many days had not depressed the Germans' spirit and the advance was hotly contested.
But, fortunately for the early telescope makers, the degree of this aberration is independent of the focal length of the lens; so that, by increasing this focal length and using the appropriate eye-piece, the image can be greatly magnified, while the fringe of colors remains about the same as when a less powerful lens is used. Hence the advantage of Huygens's long telescope.
I was about to turn again to the interesting work of observation through the lens in the floor, when my attention was diverted by the sight of something like a whitish cloud visible through the upper window on my left hand. Examined by the telescope, its widest diameter might be at most ten degrees.
Of what parts are the outer, middle, and inner coats of the eyeball made up? What portions of the eyeball reflect light? What absorb light? What transmit light? What refract light? Show how the iris, the crystalline lens, the retina, the ciliary muscle, and the cornea aid in seeing. Trace a wave of light from a visible object to the retina.
You observe their shape the common surgical patterns. Now, look at THIS needle, with which the Professor was just going to prick my finger! You can see for yourself at once it is of bluer steel and of a different manufacture." "That is quite true," I answered, examining it with my pocket lens, which I always carry. "I see the difference. But how did you detect it?"
Presently it came in view through the upper lens, but did not obscure in the least the image of the stars which were then visible in the metacompass.
Word Of The Day