Drawtube
(Science: microscopy) The smaller of the two tubes on a monocular microscope. The drawtube (if present) carries the ocular, it can be adjusted to control tube length and so effect corrections for the objective lens. The drawtube may also be convenient in calibrating an eyepiece-micrometre by allowing a minor magnification change to simplify the conversion factor.
Drawtube (Science: microscopy) The smaller of the two tubes on a monocular microscope. The drawtube (if present) carries the ocular, it can be adjusted to control tube length and so effect corrections for the objective lens. The drawtube may also be convenient in calibrating an eyepiece-micrometre by allowing a minor magnification change to simplify the..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
