Classification of Sedimentary Rocks (Part 1). Sedimentary rocks are classified based on their texture and composition. Detrital sediment has a clastic (broken) texture. Chemical and organic sediments have a non-clastic texture, and are classified based solely on their composition.
Galvanometer vs Ammeter. Ammeter and galvanometer are two devices that are used in the field of electronic and electrical measurements. Galvanometer is a very important device that is used to develop other measuring devices. It is also used to measure electrical currents. Ammeter is also a device that is used to measure electrical current.
An ideal voltmeter has two terminals and senses the voltage between the terminals where they may be connected to a circuit. Ideally the voltmeter has infinite resistance. It is polarized and indicates polarity as well as the magnitude of the voltage. An ideal ammeter is a two terminal device, also polarized. It is connected in series with circuit elements to measure the sign and magnitude of the current flowing through that component. The circuit has to be opened to insert the ammeter to measure current flow. The ideal ammeter has no resistance to flow.