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2. Electrical resistivity and conductivity - Wikipedia

   en.wikipedia.org/wiki/Electrical_resistivity_and...

   One: all gas particles behave in a similar way, influenced by gravity and by collisions with one another. Two or three: electrons , ions , protons and neutrons can be distinguished by the sign and value of their charge so that they behave independently in many circumstances, with different bulk velocities and temperatures, allowing phenomena ...

3. Gamma-ray burst - Wikipedia

   en.wikipedia.org/wiki/Gamma-ray_burst

   The observation of minutes to hours of X-ray flashes after a short gamma-ray burst is consistent with small particles of a primary object like a neutron star initially swallowed by a black hole in less than two seconds, followed by some hours of lesser energy events, as remaining fragments of tidally disrupted neutron star material (no longer ...

4. Big Bang - Wikipedia

   en.wikipedia.org/wiki/Big_Bang

   The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] The notion of an expanding universe was first scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations.

5. Ray of Light (song) - Wikipedia

   en.wikipedia.org/wiki/Ray_of_Light_(song)

   "Ray of Light" is a song by American singer Madonna. It is the title track from her seventh studio album, Ray of Light (1998), and was released as the album's second single on April 27, 1998, by Maverick Records.

6. Thermal expansion - Wikipedia

   en.wikipedia.org/wiki/Thermal_expansion

   A number of materials contract on heating within certain temperature ranges; this is usually called negative thermal expansion, rather than "thermal contraction".For example, the coefficient of thermal expansion of water drops to zero as it is cooled to 3.983 °C (39.169 °F) and then becomes negative below this temperature; this means that water has a maximum density at this temperature, and ...

7. Ray LaHood - Wikipedia

   en.wikipedia.org/wiki/Ray_LaHood

   LaHood was one of only three Republicans elected to the House that year who did not sign on to the ... 30% Ray LaHood: 216,047 70% 2006: Steve Waterworth 73,052 33% ...