The Doppler effect (or Doppler shift), named after the Austrian physicist Christian Doppler, who proposed it in 1842 in Prague, is the change in frequency of a wave (or other periodic event) for an observer moving relative to its source. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, it is identical at the instant of passing by, and it is lower during the recession.

The Los Angeles County Tobacco Control Program (TCP) is part of the Division of Chronic Disease Prevention and Health Promotion in the Department of Health Services. It was established as a result of the tobacco tax initiative of 1988, Proposition 99/AB75, in December of 1989. The goal of TCP is to establish policies, health services, public education, and media conditions that support the reduction of tobacco use in Los Angeles County and the associated disease, disability, and mortality.

"Give me your tired, your poor, your huddled masses yearning to breathe free, the wretched refuse of your teeming shore. Send these, the homeless, tempest-tossed, to me. I lift my lamp beside the golden door." - Emma Lazarus, inscription for the Statue of Liberty

Longtime Attorney General Darrell McGraw was a fierce enforcer of state consumer protection laws, winning billions from firms and fly-by-night outfits that committed consumer violations. For West Virginia illness and death caused by cigarettes, McGraw won two lawsuit settlements from 23 tobacco firms for $1.7 billion and $200 million. In 2002, McGraw won $56 million from 15 coal companies that used "independent contractors" to duck state workers' compensation obligations.

The programs and resources developed by the Education Department of the Los Angeles County Museum of Art are designed to extend the museum experience in the fullest possible way to the widest possible audience, both present and future. These programs provide visitors of all ages with the opportunity to expand their experience with works of art in both the museum's permanent collection an d its special exhibitions.