A force of 1 newton is about the weight of an apple.
Science & Math
Burglars Beware
Who says math is too abstract?
The Chvátal Art Gallery Theorem states that if you run an art gallery with n corners, you’ll need n/3 guards (at most) to watch the entire galleryregardless of its shape.
Math Notes
28 + 48 + 68 + 78 + 88 + 08 + 58 + 08 = 24678050
Presto
Pick a three-digit number (example: 412).
Double it to create a six-digit number (412412).
Divide the result successively by 7, by 11, and by 13. There will be no remainders.
The result is the original number.
Where’s the Fallacy?
“In Event of Moon Disaster”
On July 18, 1969, two days before the first lunar landing, presidential speechwriter William Safire composed the following text to be read by President Nixon if astronauts Neil Armstrong and Edwin Aldrin were stranded on the moon:
Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace.
These brave men, Neil Armstrong and Edwin Aldrin, know that there is no hope for their recovery. But they also know that there is hope for mankind in their sacrifice.
These two men are laying down their lives in mankind’s most noble goal: the search for truth and understanding.
They will be mourned by their families and friends; they will be mourned by the nation; they will be mourned by the people of the world; they will be mourned by a Mother Earth that dared send two of her sons into the unknown.
In their exploration, they stirred the people of the world to feel as one; in their sacrifice, they bind more tightly the brotherhood of man.
In ancient days, men looked at the stars and saw their heroes in the constellations. In modern times, we do much the same, but our heroes are epic men of flesh and blood.
Others will follow, and surely find their way home. Man’s search will not be denied. But these men were the first, and they will remain the foremost in our hearts.
For every human being who looks up at the moon in the nights to come will know that there is some corner of another world that is forever mankind.
Safire also suggested that Nixon call the “widows-to-be” before the speech, and that a clergyman should commend the astronauts’ souls to the “deepest of the deep” when communications ended.
Math Notes
17 + 77 + 47 + 17 + 77 + 27 + 57 = 1741725
Subtraction Pangram
Each term in this equation contains each of the nine digits once:
Proof That 2 Does Not Exist
2 is the only even prime.
But the total number of primes is infinite.
Therefore the probability that a given prime number is even is 1 over infinity, or zero.
Hence it’s impossible for a prime number to be even — and 2 does not exist.
Math Notes
55 + 45 + 75 + 45 + 85 = 54748