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Groovy Earthquake Proof Skyscrapers

 Groovy Earthquake Proof Skyscrapers

“An earthquake is such fun when it is over.” – George Orwell

A long time ago, our ancestors believed earthquakes to be the act of the Gods. Aristotle, a Greek philosopher, was the first to realise that earthquakes were more than an act of the Gods. To this day, STEMists continue to tame the devastating effects earthquakes have on human lives, buildings, roads, and power supplies.

How do people build structures that resist earthquake damage? Well, in the past it wasn’t really possible. The building materials available were limited to stone, brick, wood, thatch – none of them good for surviving earthquakes or high winds. Modern skyscrapers are made possible by modern building materials, especially steel.

What is steel?

Steel is iron mixed with other substances and/or given special treatments.  Carbon steel is iron mixed with carbon.  Depending on the amounts of each element, carbon steel can be brittle and hard like cast iron (e.g. a skillet) or soft and workable like wrought iron (think of a groovy iron gate.)

Wrought Iron Gate

Groovy Wrought Iron Gate

Alloy steel is iron mixed with other metals such as chromium, nickel, or vanadium.  The metals in the mix are chosen to make the iron stronger or lighter.  Tool steel is specially treated to be strong through a process called tempering.  The steel is quickly heated to a high temperature, quickly cooled (quenched) and heated again to a lower temperature.  Finally, stainless steel is mixed with high amounts of chromium and nickel to make it smooth, easy to clean and polish. Stainless steel is used for eating utensils and surgical instruments.

How do STEMists make buildings earthquake resistant?

The more lightweight and flexible a building is, the better it can withstand the lateral (sideways) forces of an earthquake.  Skyscrapers are built around a steel frame that supports the weight of the walls and floors.  Regular buildings use the walls to support the weight of the house or other structure, but in a skyscraper the weight of all those upper walls would be too much for the lower walls to support.  Steel makes tall buildings possible.

From the spire of the Burj Khalifa building in Dubai during construction

From the spire of the Burj Khalifa building in Dubai during construction

The foundation of a skyscraper is extremely important. Think of a pyramid with its wide base. Would it stand as well if turned upside down? Of course not!  Base-isolation, an engineering design, is used to prevent damage to buildings from the seismic impact from earthquakes. This technique where the bottom section of a building absorb the seismic waves of energy to prevent damage, was used as far back as the Mausoleum of Cyrus.

Mausoleum of Cyrus, the oldest base-isolated structure in the world

Mausoleum of Cyrus, the oldest base-isolated structure in the world

Skyscrapers are placed on a foundation designed to absorb vibrations from earthquakes.  Architects design flexible springs and cushioned cylinders to act as shock absorbers.  Think of the shock absorbers on a car.  Without proper shocks, the car would bounce dangerously as it moved over potholes or railroad crossings. The shocks keep all the tires on the ground despite bumps, just as a building’s foundation keeps the building from tipping or moving off the foundation.

Flexible springs and cushioned cylinders to act as shock absorbers

Architects design flexible springs and cushioned cylinders to act as shock absorbers.

A shake table is a device used to determine how well a building will react to earthquakes.  To see how well structures will react to earthquake shocks, building models are placed on massive outdoor shake tables and subjected to an array of ground motion energy.

Shake Table

Outdoor Shake Table

Burj Khalifa building in Dubai
The Burj Khalifa, the world’s largest skyscraper, is so tall the tip of the top sphere is visible from 95 kilometers away on a clear day. It has an enormous “mass dampener” or harmonic absorber. This is a device mounted inside skyscrapers to absorb vibrations that might otherwise damage the building. The aluminum used in the building weighs as much as five A380 aircraft and the concrete weighs as much as 100,000 elephants. The Burj Khalifa’s aesthetic and environmental design mimics the look of a hymenocallis flower with its shaped central spire while collecting 15 million gallons of water every year.

Burj Khalifa building in Dubai

Burj Khalifa

Burj Khalifa building in Dubai

Design and Inspiration from Nature

Burj Khalifa compared with some other well-known tall structures

Burj Khalifa compared with some other well-known tall structures (not all pictured are, however, earthquake proof.)

Taipei 101 building in Taiwan

In Taiwan, the Taipei 101 building (over 449 meters high) includes a central column that acts as a pendulum to balance the sideways movement of seismic waves from earthquakes and typhoons.  Architects got this idea from ancient pagodas (temples) which have stood for centuries in earthquake-prone areas.  The Japanese used the same pagoda idea when they built the Yokohama Landmark Tower (296 meters tall.)

Taipei 101 building in Taiwan

Taipei 101 Skyline

Taipei 101 building in Taiwan

Petronas Towers in Kuala Lumpur, the capital of Malaysia
The Petronas Towers in Kuala Lumpur, Malaysia, stand 452 meters high. They were the tallest buildings in the world until 2004 and remain the tallest twin towers in the world. They include the world’s tallest 2-story bridge connecting the 41st and 42nd floors. The bridge is designed to slide in and out of the buildings as the wind causes the buildings to sway–safer than a rigid design would be.

Petronas Towers in Kuala Lumpur, the capital of Malaysia

The Petronas Towers at dusk.

Petronas Towers Skyline

The Petronas Towers and the Kuala Lumpur Tower dominate the skyline of Kuala Lumpur’s Central Business District.

U.S. Bank Tower in Los Angeles
In the United States, earthquakes are most closely associated with the state of California, although there are fault lines in other areas of the country as well. The U.S. Bank Tower in Los Angeles is 310 meters high. It is also known as the Library Tower because it includes a restored Los Angeles library.

U.S. Bank Tower in Los Angeles

U.S. Bank Tower in Los Angeles

Downtown Los Angeles Skyline

Downtown Los Angeles Skyline

TransAmerica Pyramid in San Francisco
Another famous skyscraper in California is the TransAmerica Pyramid in San Francisco. This elongated pyramid was built to allow sunlight to reach the surrounding areas in spite of the building’s height of 260 meters. That was pretty groovy for them to do for their not so tall neighbors. Because of the shape of the building, the majority of the windows can pivot 360 degrees so they can be washed from the inside. The spire is actually hollow and lined with a 100-foot steel stairway at a 60 degree angle, followed by two steel ladders. There used to be a public observation deck on the 27th floor, but it was closed after 9/11. That means you can only check out the view by looking at the live feeds at the Visitor Center.

TransAmerica Pyramid in San Francisco

TransAmerica Pyramid in San Francisco

TransAmerica Pyramid in San Francisco

Interior TransAmerica Pyramid

There is a commemorative plaque in honor of Bummer and Lazarus, the famous dogs of the 1850s, at the base of the building.

Bummer and Lazarus, the famous dogs of the 1850s

Buildings of the Future

The Wilshire Grand Tower
The Wilshire Grand Tower will be 335 meters tall when completed. It will then be the tallest building in Los Angeles and the tallest building west of the Mississippi River.

The Wilshire Grand Tower

Salesforce Tower (once called the Transbay Tower)
Also being built in San Francisco is the Salesforce Tower (once called the Transbay Tower.) This building will be 326 meters tall and second tallest building west of the Mississippi. It was begun in 2013 and is expected to be open in 2018.

Salesforce Tower (once called the Transbay Tower)

Architects and engineers are always looking for new ideas to build groovier buildings, especially in earthquake-prone areas. Old ideas like the pagoda and new ideas like modern alloy steel and harmonic absorbers can combine to make buildings that look groovy and stand tall through the forces of nature.

Learn More about earthquakes and earthquake proof structures with “Shake It Up” Groovy Lab in a Box!

Shake It Up” Engineering Design Challenge: You are a groovy earthquake engineer who has been contracted by the city of Los Angeles. Using only the materials from your Groovy Lab in a Box, can you design and build the tallest skyscraper that can withstand the next BIG quake?

During their engineering design process, STEMists will investigate what causes earthquakes while constructing a groovy seismograph and shake table. Explore S and P waves, fault planes, famous earthquake proof structures around the world and much, much more! From their groovy lab notebook, STEMists do investigation activities which work in tandem with the special “Beyond…in a Box” online learning portal. This is a unique feature of Groovy Lab in a Box because it gives STEMists a deeper understanding of that month’s topic. “Beyond…in a Box” has videos, reading library and more interactive activities to supplement what they are learning from the box projects, which also helps the STEMist even more when completing the design challenge.

Join Now! and challenge your STEMists to a monthly Groovy Lab in a Box, full of everything a child needs to learn about and do hands-on science, technology, engineering, and mathematics (STEM) investigations and engineering design challenges. Our monthly box activates thinking, questioning, inquiring and original creation as we guide children through scientific inquiry and the engineering design process.

Nikola Tesla: Imagining the Future

“I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success… such emotions make a man forget food, sleep, friends, love, everything.” – Nikola Tesla

Quoted by Cleveland , ‘A Talk With Tesla’, Atlanta Constitution (7 Jun 1896)

 Nikola Tesla

Nikola Tesla is being rediscovered in pop culture and celebrated as a man before his time and for distinctly imagining the future: devices and technologies we use today such as mobile phones, wireless internet and renewable energy.

“It will soon be possible to transmit wireless messages around the world so simply that any individual can carry and operate his own apparatus.” – Nikola Tesla 

From “WIRELESS OF THE FUTURE” Popular Mechanics October 1909 (Nikola Tesla in The New York Times.)

Tesla’s father Milutin Tesla

Tesla’s father Milutin Tesla

Tesla’s mother Georgina Djuka

Tesla’s mother Georgina Djuka

STEMist, Nikola Tesla, was born in Smiljan Croatia, which was a part of the Austro-Hungarian Empire at that time. Ironically, the time of his birth was at the stroke of midnight between July 9th and 10th while a fierce electrical storm raged that very night in 1856. The fourth of five children, Nikola’s family lived on a farm and his father, Milutin Tesla, was a priest in the Serbian Orthodox Church. Sadly, his older brother, Danilo, was killed in a riding accident when Nikola was only 7 years old.

Place of Birth of Nikola Tesla Smiljan, Croatia

Place of Birth of Nikola Tesla Smiljan, Croatia, which was then part of Austria-Hungary.

Tesla's house where he was born in 1856

Nikola Tesla’s house where he was born in 1856.

Serbian Orthodox Church where Tesla was baptized

The Serbian Orthodox Church where Tesla was baptized and his father served as a Serbian Orthodox Priest.

After this tragedy, Tesla began to see visions and developed other quirks. For example, he was obsessed with the number 3, doing odd things such as circling a building 3 times before going in and insisting on 3 napkins next to his plate at every meal.

Graz University of Technolog

Graz University of Technolog

In 1877 Tesla studied mathematics and physics at the Graz University of Technology in Austria. He also studied natural philosophy at the Charles University in Prague, Czech Republic.

Charles University in Prague

Charles University in Prague

Today people might find it odd for one person to study both science and philosophy, but in the past university students often learned many different things rather than just one specialty. Philosophy is the study of knowledge and thinking – skills we certainly use when we solve problems in math and science! The Greek Aristotle was a philosopher who also made many scientific observations. Tesla’s education probably made him better at thinking up groovy new ideas.

In 1882 Tesla was walking and admiring a sunset.  Suddenly, he saw a vision of a motor that used a rotating magnetic field to produce what we now know as alternating current

Alternating System (AC). Alternating electrical current changes directions 50 to 60 times per second.  Tesla drew this motor in the ground while a friend watched and wondered at the strange diagram.  According to the experts of the time, the motor Tesla had seen in his vision was impossible and would not work.  Fortunately, Tesla did not forget his motor.

Dynamo Electric Machine - US Patent 406,968

Dynamo Electric Machine Nikola Tesla – July 16, 1889.

US Patent 406,968

A model of Tesla's first induction motor

A model of Tesla’s first induction motor, in Tesla Museum, Belgrade

On June 6th, 1884, at the age of 28, Nikola arrived in New York City (later becoming a naturalized American citizen) in search of people who would believe in his unusual ideas about electricity. He became an engineer working on improving dynamos for Thomas Edison.  Edison and Tesla did not get along well, though.  One thing they disagreed about was the use of DC or AC power.  Edison wanted the nation powered by DC, while Tesla recognized that AC could provide more power, better power, and cheaper power.  AC eventually won, but Edison put up a fight.

Nikola Tesla & Thomas Edison

Nikola Tesla & Thomas Edison

Later Tesla worked for Westinghouse.  His greatest accomplishment at Westinghouse was the invention of the high-voltage transformer we now call the Tesla coil.

Tesla Coil

This Tesla coil shut down the power in Colorado Springs when this photo was taken. Photo by Dickenson V. Alley, photographer at the Century Magazines via Wikimedia Commons.

In 1891 Tesla worked with General Electric to install AC generators at Niagara Falls in New York – creating the first modern electrical power generating plant. The Niagara Falls Hydroelectric Power and Manufacturing Company (NFHP) was located on the lower river north of Niagara Falls.

Niagra Falls - first modern electrical power generating plant.

Niagra Falls – first modern electrical power generating plant.

Unfortunately, Nikola Tesla had some hard times in his life.  In 1895 his New York laboratory burned along with most of his lab notes and equipment.  The famous banker, J.P. Morgan, helped him rebuild.  After a time, however, Morgan grew tired of Tesla’s grand and imaginative ideas and stopped providing his support.  Thomas Edison and other rivals sometimes used Tesla’s work without giving him credit.

“I don’t care that they stole my idea . . I care that they don’t have any of their own” – Nikola Tesla

Nikola Tesla

Nikola Tesla

Tesla died alone in his apartment with no riches or fame.  He did befriend the pigeons in a nearby park, even bringing injured birds home so he could care for them.  He was not recognized enough in his lifetime for his amazing ideas and inventions.  The world we live in today, however, would be very different if Nikola Tesla had not lived.

“Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine” ― Nikola Tesla

You can honor Nikola Tesla and other STEMists who have given you the modern world by creating your own electrical projects.  Check out the “It’s Electric!” groovy box – building a paper circuit with LED lights, resistors, and a battery will be one way to practice the science you are learning.  You can go on to build a buzzing door alarm and design a new kind of groovy dance pad.  Tesla was often called a man ahead of his time because he saw how useful electricity could be.  You are living in the world he imagined!

“The world, I think, will wait a long time for Nikola Tesla’s equal in achievement and imagination.” Edwin Armstrong

The Evolution of the Telescope

The Evolution of the Telescope

“My parents gave me a small telescope, then I built my own, and one thing led to another. So that’s how I ended up going from being a hobby astronomer to a professional astronomer.” – Dimitar Sasselov, Bulgarian astronomer based in the United States. He is a Professor of Astronomy at Harvard University and director of the Harvard Origins of Life Initiative.

In the beginning, people’s knowledge about the stars was limited by the power of their own eyes. The inventions of lenses, mirrors, and eventually the telescope made it possible to see more things clearly. The history of astronomy is tied to the development of the telescope, since we need to observe things in order to understand them.

Refracting Telescope

In 1608 Hans Lippershey (or Lipperhey), a Dutch eyeglass maker, was the first man to apply for a patent for the telescope. Others also claimed to be the inventor, but the Dutch government accepted his patent as the first.

Hans Lippershey (or Lipperhey)

Hans Lippershey

While the earliest telescopes only magnified things a few times, Galileo Galilei worked hard and was able to eventually make his telescope magnify things till they were 10 times larger. By 1610, Galileo had a telescope that magnified 30 times. He was able to see craters on the moon and even the moons orbiting the planet Jupiter.

Galileo's ink drawings of the moon. Credit: NASA

Galileo’s ink drawings of the moon. Credit: NASA

A 1754 painting by H.J. Detouche shows Galileo Galilei displaying his telescope to Leonardo Donato and the Venetian Senate.

A 1754 painting by H.J. Detouche shows Galileo Galilei displaying his telescope to Leonardo Donato and the Venetian Senate.

Johannes Kepler also improved upon the early refracting telescopes.  Instead of a concave and a convex lens, he tried two convex lenses.  (Concave lenses curve inward, like a bowl, while convex lenses curve out.) The largest refracting telescope ever built had a lens 40 inches wide.  It opened in 1897 at Yerkes Observatory in Williams Bay, Wisconsin.

A 1610 portrait of Johannes Kepler by an unknown artist

A 1610 portrait of Johannes Kepler by an unknown artist

Yerkes Refractor Telescope, 1897

Yerkes Refractor Telescope, 1897

Yerkes Refractor Telescope, 2006

Yerkes Refractor Telescope, 2006

Reflecting Telescope

Sir Isaac Newton studied Kepler’s work and decided it might be a better idea to build a telescope using mirrors instead of lenses. Mirrors reflect light, while lenses allow light to pass through them and bend (refract) the light.  In 1668 he built the first practical reflecting telescope. For many years scientists used both refracting and reflecting telescopes, but the reflector became the favorite of astronomers.

Diagram of Isaac Newton's reflecting telescope, from the Philosophical Transactions of the Royal Society, 1672.

Diagram of Isaac Newton’s reflecting telescope, 1672. Image courtesy of the Royal Society of London.

Edwin Hubble

Edwin Hubble at the eyepiece of the 100″ Hooker Reflecting Telescope [Photograph by Margaret Bourke-White/Time Life Pictures/Getty Images]

In the 1920’s most STEMists believed the universe was static (unchanging) in size.  But then came along astronomer Edwin Hubble in 1929 who published his findings that the universe is expanding! He did not directly see the universe expand like a balloon but calculated the velocity of light spectra from far away galaxies.  (Light from a galaxy has specific characteristics, spectrum, based on the make-up or composition of the galaxy.) From these calculations, Edwin Hubble determined that nearly all galaxies are moving away from us, and the farther the galaxies are from us, the faster they are moving … the universe is expanding!

Modern Telescopes

Karl Guthe Jansky detected radio waves in outer space in 1931. This discovery inspired engineers to develop radio telescopes and other types of telescopes for measuring and mapping microwaves, gamma rays, and other electromagnetic radiation. These telescopes helped scientists “see” invisible radiation and use it to detect objects such as pulsars.

Hubble Space Telescope Is The GROOVIEST!

The Hubble Space Telescope was launched on April 24, 1990 with the Space Shuttle Discovery. Since then, it has been in a low orbit around the earth. The Hubble Space Telescope is a reflecting telescope that also has digital cameras and satellite communications so it can send us groovy images. These images are clearer than earthbound astronomers can see because the Hubble is outside earth’s atmosphere and gets a clearer view of distant objects. The Hubble is the only telescope designed to be adjusted and repaired in space by astronauts.

Hubble Telescope

Hubble Space Telescope in a low orbit around the earth.

Groovy Images From The Hubble Space Telescope!

“We are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day.” – Carl Sagan

A replacement for the Hubble Space Telescope, the James Webb Space Telescope, is planned for launch in 2018. There are always ways to improve the telescope, so we never stop adding to our knowledge of the stars.

Moon Dance” Groovy Lab in a Box

If your STEMist loves telescopes and star stuff, be sure to check out our “Moon Dance” groovy box – explore Earth’s moon, gravity, mass vs. weight, moon phases, tides, light, telescopes and much, much, more.  Join Now! and challenge your STEMists to a monthly Groovy Lab in a Box, full of everything a child needs to learn about and do hands-on science, technology, engineering, and mathematics (STEM) investigations and engineering design challenges. Our monthly box activates thinking, questioning, inquiring and original creation as we guide children through scientific inquiry and the engineering design process.

A groovy thank you to Oh, Star Stuff for providing some of the groovy Hubble Space Telescope images above.

Technology in Fashion

 “Science & Art were never meant to be separated, they must intermingle.” – Monica & Elaine, Groovy Lab in a Box co-founders 

Technology in Fashion

Better Fabrics for Better Living

STEMists have done some amazing things with textiles (fabric) and clothing.  Today we have clothing that changes color in sunlight, socks with aloe to soothe the feet, and fleece fabric made from recycled plastic bottles–just for starters!  There are fabrics to protect people from water, germs, acid, bullets, and ultraviolet light.   Textile engineers often work with artists and designers to make sure their discoveries can be turned into clothing that looks nice enough for people to wear.

Technology, Science, Art, and Music Together

Fergie of The Black-Eyed Peas

Fergie: Kevin Mazur/WireImag

When STEMists team up with fashion designers and musical performers, some really amazing things can be created.  At the Billboard Music Awards in 2011, singer Fergie of The Black-Eyed Peas wore what looked like a little black dress–until the music began!  Philips Lighting designers had worked with fashion stylist and designer B. Akerlund to make a dress with lighting built into the fabric.  The lights on the dress even changed to the rhythm of the music.  Art and engineering worked together.

Faraday Cage Dress

Faraday cage dress

Cage dress: Kyle Cothern/Anouk Wipprecht

More recently, Anouk Wipprecht, a Dutch fashion designer, worked with the music group Arcattack to build a Faraday cage dress.  A Faraday cage, named for nineteenth-century British physicist Michael Faraday, is a mesh made of material that conducts electricity. People or things inside the cage are protected from static electrical charges because the cage safely channels the electricity.

Faraday cages are used to protect sensitive equipment from lightning strikes and other static electrical discharges.  The Faraday dress was made of metal plates and chain mail, with a helmet that had a mesh face guard.  Anouk Wipprecht demonstrated the dress by wearing it herself as it protected her from a million volts of electricity at a demonstration in 2014 at Maker Faire Bay Area.  This same science is used in the Faraday suits worn by some electrical linemen to protect them from accidental electrocution while they work on high-voltage power lines.

A Special Suit for Movie Production

Another sort of high-tech suit is the motion-capture suit used in movie productions that mix real actors with computer-generated ones.  For example, Gollum in The Lord of the Rings and The Hobbit is a computer-generated character.  His movements are made to look realistic because a live actor, Andy Serkis, performed the part during the filming of the moving.

Gollum in The Lord of the Rings and The Hobbit is a computer-generated character

Gollum photo credit: Illustration by Heather Jones for Time; Everett (3); Gollum: Warner Bros.

Serkis was wearing a suit with sensors all over it that created a computer record of his movements.  CGI (computer-generated imagery) specialists then took the computer record of Andy’s movements and added Gollum, making Gollum’s movements look lifelike.

 You Can Use Technology in Fashion

STEMists can see that art and science work well together.  Why not create your own technology and fashion mix?  Using LEDs and thread that conducts electricity is one way to make fashion items that light up safely and beautifully.  Maybe you will have a career in the textile industry.  There are still discoveries to made and amazing works of art to be created.

The Electric Life of Ben Franklin

As you do your own investigations and projects with electricity, you might want to think about a STEMist from the past who was also interested in electricity: Benjamin Franklin.

The Electric Life of Ben Franklin

A Founding Father of America

While Franklin is best remembered as one of America’s founders, he was also a man of many interests.  During his life he was a writer and publisher, a scientist, a businessman, and a politician.

booktitlepageHe was also an avid reader who loved to learn about all sorts of things.  Franklin even wrote about how best to educate young people–both boys and girls.  Not only did he want both boys and girls to have an education; he also worked for the abolition of slavery in the United States, serving as president of the Pennsylvania Society for Promoting the Abolition of Slavery.

Mrs. Silence Dogood

Though his father was a soap and candle maker, Ben was sent to be an apprentice to his brother James, a printer.  Ben learned to set the type (the letters that were inked and applied to paper to print pages) and publish newspapers and pamphlets.  When Ben showed James some of his own writing, James refused to print them.

Mrs. Silence DogoodTo get around this, Ben sent things to the paper using a pen name, Mrs. Silence Dogood.  James Franklin gladly published Mrs. Dogood’s writing until he learned “she” was really Ben, his little brother.  Ben then ran away to New York, then moved to Philadelphia, where he remained for most of his life.

The Kite, the Key and a Leyden Jar

Most STEMists know the story of Benjamin Franklin’s experiment with the kite and the key.  He did not discover electricity–people already knew it existed.  Franklin wanted to demonstrate that lightning was electricity.

Benjamin Franklin’s experiment with the kite and the key and a Leyden jar

While many illustrations show him holding the key as lightning strikes the kite, that is not exactly the way Franklin described it in a letter he wrote.  He likely used the key to capture an electrical charge in a Leyden jar (a jar used for storing static electricity.)

A Leyden jar is a device used for storing static electricity.

Holding the key in his hand would have been dangerous, and some who tried to repeat Franklin’s experiment were electrocuted.

Top portion of a lightning rod

Franklin used the results of his kite experiment to invent the lightning rod, saving many homes and barns from fires.

The physicist Michael Faraday mentioned Franklin’s experiments on ice and electricity.  Franklin observed that liquid water was a good conductor of electricity (like the wet kite string in his most famous experiment) but that ice was a poor conductor.  Franklin also noticed that heat could sometimes make poor conductors into better conductors of electricity.

STEMists can learn a lot from Benjamin Franklin, a man who was curious about the world around him and who never stopped learning new things.

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