high pressure and low pruessure
WEATHER
High Pressure
Winds within high-pressure areas flow outward from the higher pressure areas near their centers towards the lower pressure areas further from their centers. Gravity adds to the forces causing this general movement, because the higher pressure compresses the column of air near the center of the area into greater density – and so greater weight compared to lower pressure, lower density, and lower weight of the air outside the center.
Low Pressure
weather
tornado
A low-pressure area, low or depression, is a region where the atmospheric pressure is lower than that of surrounding locations. Low-pressure systems form under areas of wind divergence which occur in upper levels of the troposphere.
Tsunami
Tsunami is a Japanese word with the English translation: "harbor wave". In the past, tsunamis have been referred to as "tidal waves" or "seismic sea waves". The term "tidal wave" is misleading; even though a tsunami's impact upon a coastline is dependent upon the tidal level at the time a tsunami strikes, tsunamis are unrelated to the tides.
lighting
earn about the various layers of lighting possiblities, the purpose of each, and tips for proper placement. Read here for lots of information on how lamps, mid-range lighting, picture lighting, up lighting, task lighting, ambient lighting, candles and accent lighting will transform your rooms.