• Friday, September 21, 2018
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Facts of the Matter

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Recent ‘king tides’ caused by a combination of factors

‘King tides” is a colloquial term for the highest occurring tides. They are a type of spring tides, which have nothing to do with spring, but rather the position of the sun and moon. Read More

Seeing the smallest objects requires humongous energy

It is an interesting aspect of the universe and an ironic sense of unity that it requires more energy to see smaller objects. This is the result of the properties of waves in general and specifically the nature of electromagnetic waves. Read More

Magnetic ‘magic’ offers a cool way to charge, cook

Charging a cellphone on an induction pad seems like magic, and in a way it is. Induction is a feature of electromagnetism that Michael Faraday stated in 1831, now known as Faraday’s law. It is the basis for much of modern electrical and electronic technology. Read More

Machines can be intelligent but they will never be human

Thinking machines are here, or not. The debate continues while developments in artificial intelligence create more and more sophisticated machines that are becoming more and more humanlike. Read More
 

Evaporation, not wind chill, leaves us cold on blustery days

The blustery winds over the past month have made us feel as if winter has set in for real. It is Hawaii, and the temperature rarely drops into the 60s, but we have “thin” blood and feel the cold more than our temperate-climate counterparts who might welcome 70 degrees in February as a cause for celebration. Read More

Radiation can cause harm, but it also has myriad uses

Most radiation is not harmful; in fact, most of it is useful. People discover new uses and new methods every day for use in health, industry, business, entertainment and scientific research. Read More
 

Twice-yearly solstice marks sun’s switch in direction

The December solstice occurs at 12:44 a.m. Hawaii time Wednesday. At this instant the sun will reach its southernmost point on the ecliptic and start northward again. Read More

Many factors affect moon’s trip around Earth

Just about everyone knows that the moon orbits Earth once every month. What we do not commonly know is that the moon’s orbit is not circular; it is elliptical. Read More

Trendy LEDs are created with ‘doped’ materials

The hottest lights on the market today are cool light-emitting diodes, or LEDs. LEDs are made from semiconductors, which differ from conductors in the way their crystal structure holds electrons. Read More

Fermentation plays key role in muscles, variety of foods

It’s nearly certain that each of us consumes some fermented food or beverage daily. Bread, cheese, yogurt, beer, cured salami, cocoa and pickled foods such assauerkraut and kim chee are some examples of fermented products. Read More

Gravitational waves noted from ancient crash in space

According to general relativity, gravity is not a force that pulls on matter through empty space. Read More

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