Frases Célebres:

The only letter not appearing on the Periodic Table is the letter “J”.

Velcro was invented by a Swiss guy who was inspired by the way burrs attached to clothing.

The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.

The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket.

No matter its size or thickness, no piece of paper can be folded in half more than 7 times.

According to an old English system of time units, a moment is one and a half minutes.

Knowledge is growing so fast that ninety per cent of what we will know in fifty years time, will be discovered in those fifty years.

The typewriter was invented in 1829, and the automatic dishwasher in 1889.

The wristwatch was invented in 1904 by Louis Cartier.

When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.

Ten minutes of one hurricane contains enough energy to match the nuclear stockpiles of the world.

Most gemstones contain several elements. The exception? The diamond. It's all carbon.

Diamond is the hardest substance known.

Which of the 50 states has never had an earthquake? North Dakota.

When hydrogen burns in the air, water is formed.

The meter was originally defined as one 10-millionth of the distance from the equator to the Pole.

Sterling silver contains 7.5% copper.

Cars were first started with ignition keys in 1949.

J.B. Dunlop was first to put air into tires.

Alexander Graham Bell, who invented the telephone, also set a world water-speed record of over seventy miles an hour at the age of seventy two.

Rubber is an impertinent ingredient in the manufacture of bubble gum.

Aluminum is the most abundant metallic element on the surface of the Earth and the Moon.

Alfred Nobel invented dynamite. The Nobel prize is awarded for contributions to Science, Literature, and Promotion of Peace.

It is energy-efficient to turn off a fluorescent light only if it will not be used again within an hour or more. This is because of the high voltage needed to turn it on, and the shortened life this high voltage causes.

A meter is the distance traveled by light in a vacuum during 1/299,792,458 of a second.

The main North-South interstate highways in the US are odd numbered. The main East-West interstate highways in the US are even numbered. Coast-to-coast interstates end in zero.

The Earth's equatorial circumference (40,075 km) is greater than its polar circumference (40,008 km).

Lake Baikal is the deepest lake in the world.

The Earth's average velocity orbiting the sun is 107,220 km per hour.

The Sun's mass decreases by 4 million tones per second due to conversion of Hydrogen to Helium by thermonuclear reaction, this conversion will continue for another 5 billion years before the Sun's energy supply is exhausted.

Due to gravitational effects, you weigh slightly less when the moon is directly overhead.

There is a high and low tide because of our moon and the Sun.

The Milky Way galaxy contains 5 billion stars larger than our sun.

The Future's Museum in Sweden contains a scale model of the solar system. The sun is 105 meters in diameter and the planets range from 3.5 mm to 6 km from the 'sun'. This particular model also contains the nearest star, Proxima Centauri, still to scale situated in the Museum of Victoria ... in Australia.

A quarter of Russia is covered by forest.

Proportionally speaking, the Earth is smoother than a billiard ball

Each day is 0.00000002 seconds longer than the one before because the Earth is gradually slowing down.

More than 75% of all the countries in the world are north of the equator.

AM and PM stand for "Ante-Meridian" and "Post-Meridian," respectively, and A.D. actually stands for "Anno Domini" rather than "After Death."

There is enough petrol in a full tank of a Jumbo Jet to drive an average car four times around the world.

The surface speed record on the moon is 10.56 miles per hour. It was set with the lunar rover.

The planet Saturn has a density lower than water. So, if placed in water it would float.

Just twenty seconds' worth of fuel remained when Apollo 11's lunar module landed on the moon.

If you could drive to the sun -- at 55 miles per hour -- it would take about 193 years

The moon is one million times drier than the Gobi Desert.

A Boeing 707 uses four thousand gallons of petrol in its take-off climb.

For every extra kilogram carried on a space flight, 530 kg of excess fuel are needed at lift-off.

Since 1959, more than 6,000 pieces of 'space junk' (abandoned rocket and satellite parts) have fallen out of orbit - many of these have hit the earth's surface.

It takes 70% less energy to produce a ton of paper from recycled paper than from trees.

Every year in the US, 625 people are struck by lightning.

Hawaii is moving toward Japan ~4 inches a year.

The North Atlantic gets ~1 inch wider every year.

The rocket engine has to supply its own oxygen so it can burn its fuel in outer space.

Hydrogen is the most abundant element in the Universe (75%).

Oxygen is the most abundant element in the Earth’s crust, waters, and atmosphere (about 49.5%)

The center of the Sun is about 27 million degrees Fahrenheit (15 million °C).

A bolt of lightning is about 54,000°F (30,000°C); six times hotter than the Sun.

A stroke of lightning discharges from 10 to 100 million volts & 30,000 amperes of electricity.

Sunlight takes about 8 minutes & 20 seconds to reach the Earth at 186,282 miles/sec (299,792 Km/sec). The Earth is 150 million kilometers away from the Sun.

The average distance between the Earth & the Moon is 238,857 miles (384,392 km). At Perigee the distance is 221,463 miles (356,334 km) and at Apogee it is 251,968 miles (405,503 km).

The moon is 27% the size of the Earth.

The Earth weighs 6.6 sextillion tons, or 5.97 x 1024 kg.

The highest point on land is the top of Mt. Everest (8,448 meters). The deepest point on the Earth’s surface is the Marianas Trench (11,034 meters).

The highest temperature on Earth was 136°F (58°C) in Libya in 1922. The lowest temperature on Earth was -128.6°F (-89.6°C) in Antarctica in 1983.

Sunlight can penetrate clean ocean water to a depth of 80 meters.

The average ocean floor is 4,000 meters.

Seawater is, on the average, 3.5% salt. The Dead Sea is 25% salt.

The rotating wind speeds of a cyclone is 10 to 60 mph, a hurricane is 75 to 200 mph, and a tornado is 300 mph. Their diameter can be up to 1,000, 600, and 1 mile(s) respectively.

Chimps are the only animals that can recognize themselves in a mirror.

The temperature can be determined by counting the number of cricket chirps in fourteen seconds and adding 40.

Houseflies have a lifespan of two weeks.

A duck's quack doesn't echo.

Starfish don't have brains.

Shrimps' hearts are in their heads.

The average person falls asleep in seven minutes.

Every time you lick a stamp, you're consuming 1/10 of a calorie.

An ostrich's eye is bigger that its brain.

The longest recorded flight of a chicken is thirteen seconds

Emus and kangaroos cannot walk backwards.

Cats have over one hundred vocal sounds, while dogs only have about ten.

The pupil of an octopus' eye is rectangular.

Our eyes are always the same size from birth, but our nose and ears never stop growing.

The common goldfish is the only animal that can see both infra-red and ultra-violet light.

An iguana can stay under water for twenty-eight minutes.

Ants cannot chew their food, they move their jaws sideways, like scissors, to extract the juices from the food.

It's impossible to sneeze with your eyes open.

The leg bones of a bat are so thin they cannot walk.

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.

Human birth control pills work on gorillas.

Hummingbirds are the only animals able to fly backwards.

Tigers have striped skin, not just striped fur.

Your left lung is smaller than your right lung to make room for your heart.

Crickets hear through their knees.

A cat's jaws cannot move sideways.

Armadillos get an average of 18.5 hours of sleep per day.

Armadillos can walk underwater.

There are more beetles than any other kind of creature in the world.

No animal, once frozen solid survives when thawed, because the ice crystals formed inside cells would break open the cell membranes. However there are certain frogs that can survive the experience of being frozen. These frogs make special proteins which prevent the formation of ice (or at least keep the crystals from becoming very large), so that they actually never freeze even though their body temperature is below zero Celsius. The water in them remains liquid: a phenomenon known as 'supercooling.' If you disturb one of these frogs (even just touching them), the water in them quickly freezes solid and they die.

Only humans sleep on their backs.

The human brain is 80% water.

The brain uses more than 25% of the oxygen used by the human body.

Everyone's tongue print is different.

15 million blood cells are produced and destroyed in the human body every second.

As an adult, you have more than 20 square feet of skin on your body--about the same square footage as a blanket for a queen-sized bed.

In your lifetime, you'll shed over 40 pounds of skin.

Every minute, 30-40,000 dead skin cells fall from your body.

There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.

The largest cell in the human body is the female reproductive cell, the ovum. The smallest is the male sperm.

If a surgeon in Ancient Egypt lost a patient while performing an operation, his hands were cut off.

If your mouth was completely dry, you would not be able to distinguish the taste of anything.

Muscles are made up of bundles from about 5 in the eyelid to about 200 in the buttock muscle.

Muscles in the human body (640 in total) make up about half of the body weight.

If 80% of the human liver was removed, it could still function and would eventually restore itself to its original size.

Most people blink about 17,000 times a day.

The human body has enough fat to produce 7 bars of soap.

The human head is a quarter of our total length at birth, but only an eighth of our total length by the time we reach adulthood.

There is no single word given to describe the back of the knee.

A starfish can turn its stomach inside out.

Sea otters have 2 coats of fur.

Hummingbirds can't walk.

Moths have no stomach.

Despite the hump, a camel’s spine is straight.

1 kg of lemons contain more sugar than 1 kg of strawberries.

The largest eggs in the world are laid by sharks.

A zebra is white with black stripes.

The animal with the largest brain in relation to its body is the ant.

A crocodile’s tongue is attached to the roof of its mouth.

Sharks are immune to cancer.

Crocodiles swallow stones to help them dive deeper.

Giraffes are unable to cough.

On average, Elephants sleep for about 2 hours per day.

A giraffe's neck contains the same number of vertebrae as a human.

A cheetah can accelerate from 0 to 70 km/h in 3 seconds.

The heart of giraffe is two feet long, and can weigh as much as twenty four pounds.

Fish are the only vertebrates that outnumber birds.

Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.

A mosquito has 47 teeth.

Seventy percent of the dust in your home consists of shed human skin

Fingernails have a life span of three to six months. That's how long it takes them to grow from base to tip, progressing at the pace of 1.5 inches a year -- or 0.000000047 inches a second.

A cockroach can live for several weeks without its head.

Elephants have been known to remain standing after they die.

The average human produces a quart of saliva a day -- about 10,000 gallons in a lifetime

The embryos of tiger sharks fight each other while in their mother's womb, the survivor being the baby shark that is born.

Ants do not sleep.

If you sneeze too hard, you can fracture a rib. If you try to suppress a sneeze, you can rupture a blood vessel in your head or neck and die.

Rats multiply so quickly that in 18 months, two rats could have over 1 million descendents.

If you urinate when swimming in a South American river, you may encounter the candiru. Drawn to warmth, this tiny fish is known to follow a stream of urine to its source, swim inside the body, and flare is barbed fins. It will remain firmly embedded in the flesh until surgically removed.

When a pilot light in a gas barbecue fails to ignite the gas jets properly, it is easy for you to inhale gas accidentally while trying to light it by hand. If this has happened, when the match does light, sometimes a trail of flame will blaze from the jet onto your mouth, filling your lungs with fire. Oddly enough, you would suffocate before burning to death as the flame would consume the oxygen in every breath you would take.

The soft plastic headphones used on airplanes create a warm, moist environment in the ear canal that is ideal for breeding bacteria. Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.

On a plane, if the passenger in your seat on the incoming flight had serious gas, then you are sitting on a cushion full of disease-causing microbes.

The greatest mass extinction was about 250 million years ago, when ~95% of marine life disappeared.

In one day, people in the US eat 815 billion calories worth of food; 200 billion more than they need.

An Astronaut can be up to 2 inches taller returning from space. The cartilage disks in the spine expand in the absence of gravity.

The oldest known fossil is of a single-celled organism, blue-green algae, found in 3.2 billion year-old stones in South Africa.

The oldest multi-cellular fossils date from ~700 million years ago.

The earliest cockroach fossils are about 280 million years old.

Modern humans (Homo sapiens) appeared about 25,000 years ago.

The giant Sequoia tree is the largest living thing on Earth, 113 meters, in Humboldt County, CA. It has a potential life span of 6,000 years.

There are 60,000 miles (97,000 km) in blood vessels in every human.

The average person has 100,000 hairs on his/her head. Each hair grows about 5 inches (12.7 cm) every year.

Healthy nails grow about 2 cm each year. Fingernails grow four times as fast as toenails.

20/20 vision means the eye can see normally at 20 feet. 20/15 is better; the eye can see at 20 feet what another eye sees at 15 feet.

111,111,111 x 111,111,111 = 12,345,678,987,654,321

If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.

If a statue in the park of a person on a horse has both front legs in the air, the person died in battle; if the horse has one front leg in the air, the person died as a result of wounds received in battle; if the horse has all four legs on the ground, the person died of natural causes.

No word in the English language rhymes with month, orange, silver, and purple.

Clans of long ago that wanted to get rid of their unwanted people without killing them used to burn their houses down - hence the expression "to get fired."

Only two people signed the Declaration of Independence on July 4th, John Hancock and Charles Thomson. Most of the rest signed on August 2, but the last signature wasn't added until 5 years later.

The term "the whole 9 yards" came from W.W.II fighter pilots in the South Pacific. When arming their airplanes on the ground, the .50 caliber machine gun ammo belts measured exactly 27 feet, before being loaded into the fuselage. If the pilots fired all their ammo at a target, it got "the whole 9 yards."

The most common name in the world is Mohammed.

The word "samba" means "to rub navels together."

The very first bomb dropped by the Allies on Berlin during World War II killed the only elephant in the Berlin Zoo.

The longest word in the English language, according to the Oxford English Dictionary, is pneumonoultramicroscopicsilicovolcanoconiosis. The only other word with the same amount of letters is pneumonoultramicroscopicsilicovolcanoconioses, its plural. The second longest word in the English language is "antidisestablishmenterianism".

The phrase "rule of thumb" is derived from and old English law which stated that you couldn't beat your wife with anything wider than your thumb.

Stewardesses and reverberated are the two longest words (12 letters each) that can be typed using only the left hand. The longest word that can be typed using only the right hand is lollipop. Skepticisms is the longest word that alternates hands.

The only 15 letter word that can be spelled without repeating a letter is uncopyrightable.

The only nation whose name begins with an "A", but doesn't end in an "A" is Afghanistan.

The only city whose name can be spelled completely with vowels is Aiea, Hawaii.

The first taxi with metered fares were operational in 1907.

France contains the greatest length of paved roads.

Before 1800 there were no separately designed shoes for right and left feet

The average U.S. high school graduate has a vocabulary of about 60,000 words.

'Strengths' is the longest word in the English language with just one vowel.

The shortest French word with all five vowels is "oiseau" meaning bird.

M&M's were developed so that soldiers could eat candy without getting their fingers sticky.

The longest English word that can be typed using the top row of a typewriter (allowing multiple uses of letters) is 'typewriter.'

There is a word in the English language with only one vowel, which occurs six times: Indivisibility.

"I am." is the shortest complete sentence in the English language.

The opposite sides of a dice cube always add up to seven.

Facts about prime numbers The first two primes, or numbers divisible only by themselves and 1, are 2 and 3. All other primes are either one less than or one greater than a multiple of 6, which is the product of 2 and 3. The first three 'pairs' of primes are 5 and 7, 11 and 13, 17 and 19. 23 stands without a prime partner, since 25 is the square of 5, the next prime after 3. The higher the multiple of 6, the greater the chance of either number before & after being divisible by a lower prime number.

The first prime number after 1,000,000 is 1,000,003.

A TV image must flash at least 25 times/sec to be perceived as continuous motion.

On Nov 21, 1969 two computers “talked” over a phone line. The Internet was born.

The first passenger elevator was installed in New York in 1857 by Elisha Otis.

“Lead” for pencils is made of powdered graphite, clay & water, then placed in rods where they dry, are heated at 1000 °C, and waxed.

Sir Isaac Newton tenía sólo 23 años cuando descubrió la ley de gravitación universal.

La única letra que no aparece en la Tabla Periódica es la “J”.

La biblioteca principal de la Universidad de Indiana se hunde más de una pulgada cada año porque cuando la construyeron, los ingenieros no tomaron en cuenta el peso de los libros que ocuparían el edificio.

El horno microondas fué inventado después que un investigador caminó por un radar y una barra de chocolate se le derritió en su bolsillo. 

No importa el tamaño o grosor, ningún pedazo de papel se puede doblar por mitad más de 7 veces.

Según un sistema inglés antiguo, un momento equivale a un minuto y medio.

Un carro viajando a 80 km/hora usa la mitad de su combustible para romper el viento.

El conocimiento está creciendo tan rápido, que el 90% de lo que sabremos en 50 años, será descubierto en esos 50 años.

La máquina de escribir se inventó en 1829, y la lavaplatos automática en 1889.

El reloj de puño lo inventó Louis Cartier en 1904.

Cuando el vidrio se rompe, las rajaduras se mueven a más o menos 3,000 millas por hora.

Diez minutos de un huracán contiene suficiente energía para igualar las reservas nucleares mundiales.

La mayoría de piedras preciosas contienen varios elementos. La excepción? El diamante. Es carbón en su totalidad.

El diamante es la substancias más dura que se conoce.

El estado de US que no ha tenido terremoto: North Dakota.

Cuando el hidrógeno se quema en el aire, se forma agua.

El metro se definió como un 10-milloésimo de la distancia del ecuador al polo.

La plata contiene un 7.5% de cobre.

Los carros los empezaron a encender con motor de arranque en 1949.

J.B. Dunlop inventó las llantas inflables.

Alexander Graham Bell, quien inventó el teléfono, también rompió el récord velocidad acuática de 70 millas por hora cuando tenía 72 años.

El caucho es un ingrediente en la manufactura de la goma de mascar.

 Hechos Ciencias de la Tierra:

La circunferencia de la Tierra en el ecuador (40,075 km) es mayor que la circunferencia polar (40,008 km).

El lago Baikal (en Rusia) es el más profundo del mundo.

La velocidad orbital de la Tierra es de 107,220 km por hora.

La masa del sol disminuye 4,000,000 de toneladas por segundo debido a la conversión de hidrógeno a helio por reacción termonuclear. Esta reacción continuará por otros 5 billones de años.

Debido a efectos gravitacionales, usted pesa menos cuando la luna está justamente arriba.

Hay mareas alta y baja debido a la luna y el sol.

Nuestra galaxia la vía láctea contiene 5 billones de estrellas más grandes que el sol.

El Museo del Futuro en Suiza contiene un modelo a escala del Sistema Solar. El sol tiene 105 metros de diámetro y los planetas distan entre 3.5 mm a 6 km del ‘sol’. Este model también contiene la estrella más cercana, Proxima Centauri, también a escala, situada en el museo de Victoria ... en Australia.

La cuarta parte de Rusia está cubierta de bosques.

Proporcionalmente hablando, la Tierra es más lisa que una bola de billar.

Cada día es 0.00000002 segundos más largo porque la Tierra va disminuyendo de velocidad poco a poco.

Más del 75% de todos los países del mundo están al norte del ecuador.

AM y PM quieren decir, "Ante-Meridiano" y "Pasado-Meridiano," respectivamente, y A.D. quiere decir "Anno Domini" y no "After Death. - Después de la muerte".

Hay suficiente petrol en el tanque lleno de un Jet Jumbo para conducir un auto cuatro veces alrededor del mundo.

La velocidad récord en la luna es de 10.56 millas por hora. Se hizo en el “lunar rover”.

El planeta Saturno tiene una densidad menor que la del agua. Por lo tanto, si se colocara en agua, flotaría.

Solamente quedaba el equivalente a 20 segundos de combustible en el módulo lunar del Apollo 11 cuando aterrizó en la luna.

Si usted pudiera conducir hacia el sol -- a 55 millas por hora -- le tomaría 193 años.

La luna es 1 millón de veces más seca que el desierto gobi.

Un Boeing 707 usa 4,000 galones de petrol en su despegue.

Por cada kilogramo extra de peso llevado al espacio, se necesitan 530 kg de combustible para el lanzamiento de la nave (o cohete).

Desde 1959, más de 6,000 pedazos de ‘chatarra espacial’ (partes abandonadas de cohetes y satélites) han caído fuera de órbita - muchos han caído en la superficie terrestre.

 Otros Hechos: