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Ertl, Gerhard

(Encyclopedia) Ertl, GerhardErtl, Gerhardgĕrˈhärt ârˈtəl [key], 1936– German chemist, b. Stuttgart, grad. Univ. of Stuttgart (1961), Technical Univ., Munich (Ph.D 1965). After holding a number of…

X-ray crystallography

(Encyclopedia) X-ray crystallography, the study of crystal structures through X-ray diffraction techniques. When an X-ray beam bombards a crystalline lattice in a given orientation, the beam is…

Adorno, Theodor Wiesengrund

(Encyclopedia) Adorno, Theodor WiesengrundAdorno, Theodor Wiesengrundtāədôrˌ vēˈzəngr&oobreve;nd ädôrˈnō [key], 1903–69, German philosopher, born as Theodor Adorno Wiesengrund. Forced into exile…

Trojan asteroids

(Encyclopedia) Trojan asteroids, asteroids that revolve about the sun in the same orbit as a planet, occupying stable positions (known as Lagrangian points) either about 60° ahead of the planet in…

Ultraviolet Index: What You Need to Know

//   Source: American Academy of Dermatology Did you know that overexposure to the sun can cause skin and eye injury? While some sunlight is necessary, too much is dangerous, causing sunburn,…

1995 Radio & Records All-Time Charts

1995 Radio & Records All-Time ChartsAdult Contemporary (AC)“Love Will Keep Us Alive” Eagles (Geffen)“Believe” Elton John (Rocket/Island)“Take a Bow” Madonna (Maverick/Sire/WB)“Have You…