By Sherry Seethaler
“Dr. Seethaler has written a good e-book for any scholar of technological know-how. She solutions nice questions on the area round us during this attention-grabbing publication. As a highschool technological know-how instructor, I stumble upon a lot of those from my very own scholars. i'd hugely suggest this e-book for a person who has meditated questions beginning with ‘how,’ ‘what,’ or ‘why.’” –Ernest James Lo, technology instructor, Woodside highschool, Woodside, CA organize to Be involved! Why does the flu switch each year? • What makes glue sticky? • What factors out-of-body reviews? • Are all manufacturers of gasoline a similar? • Will grownup stem cells paintings in addition to embryonic stem cells? • Is one “horsepower” relatively equivalent to the ability of 1 horse? • Why can’t you sneeze together with your eyes open? • How a lot does a cremated physique weigh? those are only some of the attention-grabbing technology and overall healthiness questions actual humans have requested most sensible technology author and San Diego Union-Tribune columnist Sherry Seethaler. Curious parents Ask brings jointly 162 of her top answers–all crystal-clear, actual, quickly, and a excitement to read. Seethaler is one among this generation’s top technological know-how explainers, and it indicates: each solution is exact, enjoyable to learn, and distilled to a unmarried web page or much less! need to know how canned air works…or nuclear bombs? What reasons goose bumps, earwax, dandruff, complications? no matter if it’s fit to crack your knuckles, drink decaf, consume chocolate? What it expenditures to run all these LED lighting round your home? It’s all here–and plenty extra! Your body’s oddities: knees to knuckles, itches to sneezesSurprising proof approximately how your physique grows and works Our creative inventionsThe earlier, current, and way forward for our relentless human inventiveness Pesky pathogens: viruses, micro organism, and prionsHow they maintain outsmarting us, and why it’s so difficult to stick fit universal chemical concoctionsThe technology at the back of the typical items that experience reworked our lives Uniquely human: how we bought here, how we’re uniqueNew classes from genetics, archaeology, and evolutionary biology
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Extra resources for Curious Folks Ask: 162 Real Answers on Amazing Inventions, Fascinating Products, and Medical Mysteries
There are two main types of nuclear bombs. In a fission bomb, large, unstable atoms (uranium or plutonium) split into smaller, more stable atoms. In a fusion bomb, also called a thermonuclear or hydrogen bomb, the nuclei of very small atoms combine to form larger, more stable atoms. The binding energies that hold together the protons (positively charged particles) and neutrons (neutral particles) in the nucleus of an atom are approximately a million times stronger than the binding energies that hold together atoms in a molecule.
Hydrogen can be burned or converted into electricity through fuel cells. Prototype hydrogen cars exist, but perversely, the hydrogen being used to power them is usually derived from natural gas. Hydrogen can be made by splitting water, but this requires a large input of energy. Storing and transporting hydrogen are also problems to be solved if hydrogen cars are ever to become practical. chapter 2 • chemical concoctions 41 Battery-powered electric vehicles are constantly improving. The major challenge in making them commercially viable is developing a battery that can power a vehicle for long distances, can be recharged repeatedly, and is not prohibitively expensive.
The latter is not a purely scientific question. The total cost to complete the International Space Station is projected to be well over $100 billion, shared by the United States, Russia, Japan, Canada, and several European countries. NASA spends about $2 billion per year on the space station. In addition, it spends approximately $4 billion on the Space Shuttle, which is mainly used to service the space station. The rationale offered by proponents of manned spaceflight is the human need to explore and the power of manned spaceflight to excite the public.