Monthly Archives: July 2011

71 (BPM)

Is a heart rate (or pulse rate) of 71 BPM (beats per minute) considered healthy for a human body (100) ?  Yes. From the Mayo clinic… “For an adult, a normal resting heart rate ranges from 60 to 100 beats a minute. For a well-trained athlete, a normal resting heart rate may be closer to [...]

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72 (ppi for posting an image on the web)

On a trip, you take many photographs (10+3) on your digital camera.  You can delete the bad ones (10+2) and download the good ones (10+2) onto your laptop.  Then you decide to post one image (100) on the web. 72 ppi (pixels per inch) is still the standard size for posting an image on the [...]

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73 (in Ham Radio)

According to ARRL (National Association of Amateur Radio), 73 is known as a “friendly word between operators”.  Because Ham Radio (also known as Amateur Radio) is wireless, the operators are more than just enthusiasts. At local levels (10+3), they offer vital assistance during disasters.  “For instance, it was the Amateur Radio Service which kept New [...]

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74 (calories)

Counting calories!  74 calories equals 1 large egg or 1 medium apple or 1 pink Florida grapefruit or 12 strawberries or 6 breadsticks or 1 cup of blackberries or 2 medium figs.  74 calories also equals 309.616 joules. Both calories and joules are units of energy. “Human beings need energy to survive — to breathe, [...]

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(16)75

In 1675, Charles II of England founded the Royal Observatory Greenwich in order to improve global naval navigation (10+7).  Many disasters had occurred at sea because sailors did not know the precise longitude (East/West direction) of where they were when out of sight of land.  “In 1714, Parliament established a panel of experts, the Board [...]

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76 (dB)

Making noise!  Decibels (or dBs) are how sounds are measured usually on a range from 0 dBs to 120 dBs. A whisper would be about 30 dBs. 75 -80 dBs would be the sound that an air conditioner or vacuum cleaner would make.  A  subway train would be about 100 dBs. Exposure to sound levels [...]

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77 (Million Paintings by Brian Eno)

The North American premiere of 77 Million Paintings by Brian Eno was presented through the Long Now Foundation at the Yerba Buena Center for the Arts in San Francisco, California in 2007.  The evolution from Eno’s original drawings to the digitized versions took a team of specialists several steps including scanning and AdobePhotoshop (10-4) to [...]

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78 (chromosomes)

Question: What has 78 chromosomes ? HINT 1: On the scale of powers of ten, chromosomes are at 10-6. HINT 2: A human has 46 while a cat has 38 and a sunflower has 34. Answer:  a dog

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79 (A.D.)

In 79 A.D., Mount Vesuvius erupted and immediately covered the Roman cities of Pompeii and Herculaneum.  “Vesuvius is part of the Campanian volcanic arc, a line of volcanoes that formed over a subduction zone created by the convergence of the African and Eurasian plates.”  Having formed millions of years (10+7) ago, these tectonic plates have [...]

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80 (Beats at Discover Magazine)

80 Beats/Discover Magazine is an online blog of some exciting, unexpected developments in science including observations of wildlife and articles from science journals.  For example, I just learned that some dolphins protect their snouts with sponges when seeking fish in rocky areas.  And in order to stop blood-sucking, disease carrying mosquitoes, one solution being researched [...]

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  • Countdown to Powers of Ten Day

    • 10/10/10 1443 days ago