Physical Treatment Technologies: Flocculation
The use of gravity is often the most economical method of separating solids from a liquid. In a sedimentation tank, heavier particles sink to the bottom and are collected in a trough. When particles, like clay, are too small to settle on their own...
Physical Treatment Technologies: Filtration
Filtration is one of the most common techniques for physical separation, and is used to remove solids from both gaseous and liquid streams. It is frequently used in the treatment of waste water.
Physical Treatment Technologies: Physical Treatment Processes
Physical treatment technologies often provide the initial and most efficient form of treatment, but do not actually transform or destroy the waste. Physical treatment processes often rely on natural forces to do the work.
Deep Connections: Differences Between Deep Ocean and Surface Currents
The flow of ocean currents follows predictable patterns governed by a variety of physical factors. For surface currents, which include water flow horizontally in the upper four hundred meters of the ocean, wind is the primary driving force. For deep...
How Tides Work
Renowned oceanographer and geophysicist Walter Munk talks about the role of gravity and the Moon in tidal processes. He also discusses early ideas about tides in the days before Sir Isaac Newton developed his theory of gravity.
The Moon, The Sun and Tides
Renowned oceanographer and geophysicist Walter Munk talks about the relative roles of the Sun and the Moon in tidal processes. He observes that, over time, the Moon is moving further away from the Earth. While the gravitational impact of the Moon is...
Weight and Temperature: Weight vs. Mass, and Metric Units of Mass
This clip explains that what we generally refer to as metric units of weight are actually units of mass. The clip states that mass measures the amount of matter an object has, while weight measures the force of Earth's gravity on an object. The clip...