From the 17th century onwards it was gradually shown that, at least in the case of all the higher and readily visible organisms, abiogenesis did not occur, but that omne vivum e vivo, every living thing came from a pre-existing living thing.
Huygens contrived some ingenious arrangements for directing such telescopes towards any object visible in the heavens - the focal adjustment and centring of the eyepiece being preserved by a braced rod connecting the objectglass and eye-piece.
It is often vacuolar, sometimes granular, and in other cases it is a homogeneous body with no visible structure or differentiation.
One tormenting impression did not leave him: that those broad- boned reddish hands with hairy wrists visible from under the shirt sleeves, those hands which he loved and hated, held him in their power.
For nothing was this man more remarkable, than for a certain impersonal stolidity as it were; impersonal, I say; for it so shaded off into the surrounding infinite of things, that it seemed one with the general stolidity discernible in the whole visible world; which while pauselessly active in uncounted modes, still eternally holds its peace, and ignores you, though you dig foundations for cathedrals.
As in the question of astronomy then, so in the question of history now, the whole difference of opinion is based on the recognition or nonrecognition of something absolute, serving as the measure of visible phenomena.
The whites of Jade.s eyes were visible before they drew near enough to hear his muffled shouts.
All over Iceland, in both the basalt and breccia formations, there occur small intrusive beds and dikes of liparite, and as this rock is of a lighter colour than the basalt, it is visible from a distance.
If suitable values are chosen for these constants, the formula can be made to represent the dispersion of ordinary transparent media within the visible spectrum very well, but when extended to the infra-red region it often departs considerably from the truth, and it fails altogether in cases of anomalous dispersion.
Its visible and religious forms then give way to abstract formulae, which in their turn are slowly replaced by the rational manifestation of the philosophic principles of law that gains the victory in the final stage of development, designated by Vico as that of civil and human law.