SLAC Today is available online at:
http://today.slac.stanford.edu
In this issue:
The Dish is Alive and Tracking
Safety Today: Shoulder the Pain
It's Baaack: DST 2007 Causes Y2K Concerns
Safety Seconds
Correction: Blood Drive February 21
Tuesday - February 13, 2007 |
The Dish is Alive and TrackingAcross the street from the Alpine Gate and up a cow-studded hill, the Dish is one of SLAC's nearest scientific neighbors. The landmark 150-foot-wide reflector antenna still sends and receives radio waves to probe the Milky Way while it checks on satellites and spacecraft. Entering the control room tucked beneath the metal lattice bowl is like stepping back in time to the early days of SLAC. Both facilities were built in the early 1960s, and the Dish still uses an antique klystron to generate the UHF-frequency waves that it transmits. "We can move the receiver toward the center of the galaxy in a minute," said Ivan Linscott of the Radio Science Group at Stanford. Read more... |
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Shoulder the PainBaseball players aren't the only ones who suffer from shoulder injuries. Damaging your shoulders from every day tasks is easier than you might think. Shoulder injuries primarily occur from overuse or from falling on an outstretched hand. The Medical Department has seen overuse injuries in employees who work for prolonged periods with their hands raised. To reduce your chances of sustaining a shoulder injury, consider the following precautions: Avoid working for extended periods with your arms in an awkward position. Rearrange things if necessary. If you have a pre-existing shoulder problem, avoid activities that may aggravate your condition. Learn and practice exercises that can improve your shoulder flexibility and strength. Pay attention to what you are doingespecially with regard to slip, trip and fall hazards. Safety SecondsIn yesterday's edition, I asked if you could identify a unique safety rule that, if broken, will almost certainly result in debilitating injuries or death. Climbing Mt. Everest from the south side, you leave at midnight and have until 2:00 p.m. to reach the summit. At 2:00 p.m., no matter where you are, you must turn around or you will die for any number of reasons. Every year some climbers still ignore this ruleand die. |
Correction: Blood Drive
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