By Rob Nagel

Comprises six hundred subject matters within the lifestyles, earth, and actual sciences in addition to in engineering, know-how, math, environmental technology, and psychology.

Show description

Read Online or Download U-X-L encyclopedia of science PDF

Best rivers books

UXL Encyclopedia of Science (Vol. 1 A -As)

Contains six hundred issues within the existence, earth, and actual sciences in addition to in engineering, expertise, math, environmental technology, and psychology.

Methane and Climate Change

Methane is a strong greenhouse gasoline and is expected to be accountable for nearly one-fifth of synthetic worldwide warming. in keeping with kilogram, it is twenty-five instances extra robust than carbon dioxide over a 100-year time horizon – and worldwide warming is probably going to reinforce methane unencumber from a few assets.

Tropical Deltas and Coastal Zones (Comprehensive Assessment of Water Management in Agriculture Series)

Tropical coastal deltas characterize probably the most assorted and quickly altering biophysical areas within the constructing global. those deltas are domestic to giant populated parts, are major centres of agricultural creation and business improvement, and comprise fragile ecosystems which are now dealing with new threats because of anticipated sea-level rises linked to international warming.

Labor Erde: Bausteine fur einen lebensfreundlichen Planeten

Exertions Erde ist eine brillante Einführung in das Studium des Planeten Erde, von den kosmischen Ursprüngen ihrer Elemente bis hin zu der Beeinflussung der Atmosphäre durch die Menschheit und den klimatischen Änderungen, die uns bevorstehen. Das Buch ist ebenso eine Beschreibung der Prozesse, die zur Entwicklung der Erde beigetragen haben, wie eine Darstellung der paintings, in der Wissenschaftler denken und Probleme lösen.

Additional resources for U-X-L encyclopedia of science

Sample text

Acceleration and force Our understanding of acceleration is due to the work of two great scientists, Italian physicist Galileo Galilei (1564–1642) and English physicist Isaac Newton (1642–1727). During the late sixteenth and early seventeenth centuries, Galileo first observed the motion of objects rolling down an inclined plane. He wrote mathematical equations that showed how the velocities of these objects increased as they rolled down the planes. These equations first described the idea of accelerated motion.

Prostaglandins: Groups of hormones and active substances produced by body tissue that regulate important bodily functions, such as blood pressure. How it works Analgesic/anti-inflammatory action. Aspirin is commonly used to relieve pain and reduce inflammation, the body’s local response to any event causing tissue damage, which includes pain, redness, swelling, and hotness of the affected area. It works best against pain that is bearable; extreme pain is almost entirely unaffected, as is pain in internal organs.

Frequency is usually measured in cycles (vibrations) per second. The unit used to measure frequency is the hertz (abbreviation: Hz). A string might be vibrating, for example, at 1,000 Hz, or 1,000 cycles per second. 1/ L 2 The distance between two identical parts of a wave is called the wavelength. Notice that the upward motion of the wave starts at the far left of the string in Figure 2 and is not repeated until the far right of the string. The letter L in the figure shows the wavelength of this wave.

Download PDF sample

Rated 4.16 of 5 – based on 21 votes