Dennis McCarthy (scientist) facts for kids
Dennis D. McCarthy is a very important scientist. He used to be in charge of "time" at the United States Naval Observatory. He also works with a group called the International Earth Rotation and Reference Systems Service. His work helps us use things like GPS.
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Who is Dennis D. McCarthy?
Dennis D. McCarthy is a scientist who has spent his career working with time and navigation. He played a big role at the United States Naval Observatory. This observatory helps keep track of time for the whole country.
The United States Naval Observatory is a special place. It helps keep track of the exact time. This is super important for many things. For example, it helps ships and planes know where they are. It also helps our phones and computers stay in sync.
How Does Time Connect to GPS?
Mr. McCarthy's work is closely linked to time. Accurate time is key for the Global Positioning System (GPS). GPS uses satellites to tell you exactly where you are. Each satellite sends out a signal with the exact time. Your phone or GPS device listens to these signals. By knowing the time difference from several satellites, your device can figure out your location.
Why is GPS Important?
GPS is used for many things every day. It helps you find your way when driving or walking. It guides airplanes and ships safely. Farmers use it to plant crops precisely. Even emergency services use GPS to find people in need quickly. Mr. McCarthy's work helped make GPS so accurate.
Honored for His Work
On April 6, 2023, Dennis McCarthy received a special honor. He was inducted into the Naval Oceanography Hall of Fame. This means his important work was recognized. The ceremony took place at the U.S. Naval Observatory. This award celebrates his big contributions to GPS and understanding time.
