external and internal validity

This is the simplest type of modem to install because you don't have to open the computer. External modems have their own power supply and connect with a cable to a computer's serial port. The telephone line plugs into a socket on the rear panel of the modem. Because external m..

Most internal modems come installed in the computer you buy. Internal modems are more directly integrated into the computer system and, therefore, do not need any special attention. Internal modems are activated when you run a communication programme and are turned of..

Factors Affecting Photosynthesis - External Factors - Photosynthesis is influenced by two categories of factors - external or environmental and internal or plant factors. According to the law of limiting factors, put forward by F.F.Blackman in 1905, photosynthesis is l..

Photosynthesis is influenced by two categories of factors - external or environmental and internal or plant factors. According to the law of limiting factors, put forward by F.F.Blackman in 1905, photosynthesis is limited by the most limiting factor. This means that, at any give..

Find the area of the shaded portion if each internal figure is obtained by joining the midpoints of the consecutive sides of the preceding external figure. [Given x = 16.5 units and y = 26.4 units.] => 65.34 square units or 16.33 square units or 42.67 square units or 32.67 squar..

Depending upon how your computer is configured and your preferences, you can have an external, internal or PC modem card. All three types work the same way, but each has its advantages and disadvantag..

There are five sense organs in humans - eyes, ears, nose, tongue and skin. Sensation is the conscious or unconscious awareness of external or internal stimuli. Sensing external environment is extroception. Example: Reading a page Sensing of bodys internal con..

There are five sense organs in humans - eyes, ears, nose, tongue and skin. Sensation is the conscious or unconscious awareness of external or internal stimuli. Sensing external environment is extroceptio..

Movement in plants may not be very pronounced, but it is brought about by definite external and internal stimuli. Movement which occur due to external stimuli are known as induced or paratonic movements and the movements which occur due to factors inherent inside the p..

The epithelial cells become specialized to form receptors that are capable of receiving the various external and internal stimuli, and transferring them to the nerve cells. E.g. Photoreceptors, thermoreceptors, osmoreceptors, pressure receptor..