Scientific American, November 1, Advertisement A competition sponsored in by Scientific American asked for essays on the 10 greatest inventions.
Today, GPS is an essential tool for national defense strategy, scientific research, and homeland security. It also serves as an important modern technology for navigational purposes.
The technology of today is the Global Positioning System, which uses the global navigation satellite system managed by the government of the United States to pinpoint locations on a map.
This was developed in by the U. Department of Defense, but it only became fully operational in The technology developed from satellite navigation experiments that tracked U. With the help of satellites, submarines were able to detect changes in radio signal position based on the "Doppler effect.
The development of chemotherapy drugs has saved countless lives that may otherwise have been lost to cancer. Goodman — and Alfred Gilman — When was it invented? The s Why is it significant? Goodman and Gilman's work led to significant improvements in cancer-fighting medicine.
The ongoing development of chemotherapy treatments has led to a decline in cancer patient mortality rates.
Today, cancer and chemotherapy are sadly two commonly understood words. The use of chemotherapy for cancer treatment started in the s when two pharmacologists from Yale University, Louis S. Goodman and Alfred Gilman, made observations that nitrogen mustard, a chemical warfare agent, suppressed the growth of lymphoid and myeloid cells.
The pair began to research the effects of using mustard agents in treating lymphoma, first experimenting on mice, then injecting nitrogen mustard into a patient with non-Hodgkin's lymphoma. They discovered that, although the patient had to return for repeat injections, the tumor masses were significantly reduced from the treatment.
The results of their initial research were published in Their study sparked an interest in the subject for other scientists, and, after World War II, further research uncovered the benefits of folic acid in treating cancer.
Since then, researchers have honed in on more advanced combination chemotherapy techniques, and countless lives have been saved.
Since the s, cancer mortality rates have been steadily declining. You may never have had a chance to play your Xbox if Goldsmith and Mann hadn't developed their simple target-hitting game in Video Games Thomas T. Video games are wildly popular in today's world—the vast majority of American children and adolescents play them.
Studies have suggested that video games have cognitive, emotional, and social benefits, such as aiding in the development of spatial skills and problem-solving skills and improving focus and creativity. Aside from social networking, the most popular computer-based pastime is video gaming.
A video game allows interaction between a user and a device with video feedback. The first video game was actually an analog electronic game using a cathode ray tube.
Called the "cathode-ray tube amusement device," it was created by Thomas T.Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Explainer: Eight great American discoveries in science In any case, Franklin’s research led to the invention of the lightning rod, helped pave the way to .
Chinese Discoveries and Inventions (Chapter 20) compass. Chinese Discoveries and Invenions Ch. 18 HISTORY ALIVE! Ancient China Test - importance of Chinese inventions discoveries and Silk Road American Analysis Ant Between Business Case Case Study Development Ear Education Essay Life Management Paper Plan Report Research Review Role.
The History of Medicine A timeline of medical discoveries, inventions, advances, and events from prehistoric times to the present.
History of Medicine A museum dedicated to collecting 20th century medical research instruments and computers at the National Institutes of Health. Inventions from the telephone to the Model T and the computer have defined human history, and inventors like Leonardo da Vinci, Nikola Tesla, Thomas Edison, Eli Whitney and Alexander Graham Bell.
The invention happened by accident. Dr. Spencer was an engineer. In he was doing Inventions and discoveries.
Grammar start. Past perfect. He noticed that the chocolate. had melted. 2. Read and complete the grammar box. We use the. past perfect: Experts in Celtic history (f) (say) the coins.