The color of a cloud tells much about what is going on in the interior of the cloud. Clouds form when relatively warm air containing water vapor is lighter than its nearby air and this causes it to rise. As it rises it cools and the vapor condenses out of the air as micro-droplets. These minute particles of water are fairly densely packed, and sunlight cannot go through far into the cloud before it is reflected out, giving a cloud its attribute white color. As a cloud matures, the droplets may join to produce larger droplets, which may themselves merge to form droplets large enough to fall as rain. In this process of accretion, the space between droplets becomes larger and larger, permitting light to enter much farther into the cloud. If the cloud is satisfactorily large, and the droplets within are spaced far enough apart, it may be that a percentage of the light which enters the cloud is not reflected back out before it is absorbed .This process of reflection/absorption is what leads to the range of cloud color from white through grey through black. For the same reason, the undersides of large clouds and heavy overcasts appear various degrees of grey; little light is being reflected or transmitted back to the observer.
Education System
Education encompasses both the teaching and learning of knowledge, proper conduct, and technical experience. It therefore focuses on the cultivation of skills, trades or professions, as well as mental, moral & aesthetic development.
Proper education consists of systematic instruction, teaching and training by professional teachers. In a moderate education tradition, teachers draw on many different disciplines for their lessons, including psychology, philosophy, information technology, linguistics, biology, and sociology. Teachers in specialized professions such as astrophysics, law, or zoology may teach only in a narrow area, generally as professors at institutions of higher learning. There is much expert instruction in fields of trade for those want specific skills, such as required to be a pilot, for example. Finally, there is an array of educational occasion in the informal sphere- for this reason, society subsidizes institutions such as museums and libraries. Informal education also includes knowledge and skills learned and refined during the course of life, including education that comes from knowledge in practicing a profession.
Proper education consists of systematic instruction, teaching and training by professional teachers. In a moderate education tradition, teachers draw on many different disciplines for their lessons, including psychology, philosophy, information technology, linguistics, biology, and sociology. Teachers in specialized professions such as astrophysics, law, or zoology may teach only in a narrow area, generally as professors at institutions of higher learning. There is much expert instruction in fields of trade for those want specific skills, such as required to be a pilot, for example. Finally, there is an array of educational occasion in the informal sphere- for this reason, society subsidizes institutions such as museums and libraries. Informal education also includes knowledge and skills learned and refined during the course of life, including education that comes from knowledge in practicing a profession.
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