I am a Materials Girl

Category: Travel

The Ancient City: Edinburgh, Scotland

This question has countless answers depending on where these buildings are today. Stones used in European cities are fascinating in particular. Some cities have been around for thousands of years, and it is remarkable how there are still structures around today. A very important factor of this is the stones being used to build these specific buildings. I recently went to Edinburgh, Scotland, which has records dating back to 8500 BC, and was able to witness such old landmarks firsthand. When I visited Paris, the buildings were rarely discolored and something I did not pay much attention to. When I was in Edinburgh, though, the discoloration in the stone was fascinating to me. I was not sure if this was because of the city’s age or some other factor that affected the stone.

This is a picture I took while we were in Edinburgh, Scotland of noticeably darker stones. – March 2023

The Stones

Edinburgh is made of something called craigleith sandstone which is sturdy and already fairly different in color. These stones are typically grey or brown and desirable for building structures because it is easy to work with but also reluctant to weathering (“Interesting Facts”). This allows for such ancient cities to still be around today. As for the color of the stones in Edinburgh, knowing some were already grey to begin with made sense, but still did not explain why some looked black. According to Katie Welsh, it is actually just pollution. Up until the 20th century, coal was burned in house fires and railways and thus covered buildings in soot (Welsh). This grime and soot still covers the sandstone today, which helps protect it from corrosion. I find it fascinating how all cities have different stories to share, even within the architecture. I assumed this Scottish city looked old thanks to only its age, but there are so many more factors. It is important to remember to leave no stone unturned, literally.

Source

“Interesting Facts – Sandstone.” Banas Stone. Banas Stone, 2023, www.banasstones.com/interesting-facts/309-interesting-facts-sandstone/. 
Welsh, Katie. “Edinburgh’s Iconic Scott Monument and the Reason it Can Never Get Cleaned.” edinburghlive. MGN Limited, 29 June 2021, www.edinburghlive.co.uk/news/edinburgh-news/edinburghs-iconic-scott-monument-reason-20931701.

The Rock

I play soccer and have been playing ever since I was four years old. I have tried numerous sports since then, but I have always loved soccer the most. I started playing competitively in third grade and am still on a travel team today. I also play on the varsity team for my school, The Benjamin School. I am in ninth grade, so this is my first year on this team, but last year, they made it all the way to the State Championship. This year though, we lost in penalty kicks, in the State Semi-Finals, with a disheartening loss to the NSU Sharks. With the competitive club team I am on, we participated in the Gulf Coast Invitational in Wesley Chapel, Florida. While we were driving across the state, a rock hit our car windshield and cracked a part of the glass. We continued to drive, but the crack continued to grow. I wondered why this was happening, and what made cracks expand in this type of glass. What affects cracks in car windshields?

This was the crack in our car window that continued to spread as we drove. – February 2023

The Reason

Cracks in car windshields spread and grow because of extreme temperatures (“5 Types”). As temperatures rapidly increase or decrease, the tempered or laminated glass of cars expand and contract. When this happens too quickly, stress cracks form or add on to already damaged glass (“5 Types”). Exposure to sun and wind also causes cracks to grow (“How Do”). When driving, the wind hitting the glass does not help prevent the broken glass from spreading. Thanks to excessive sunlight, wind, and increases/decreases in temperature, cracked glass can only get worse.

Source

“5 Types of Windscreen Cracks, and What They Mean for You.” Novus Glass. NOVUS Glass, 25 June 2021, www.novusglass.com/en-au/industry-insight/5-types-of-windscreen-cracks-and-what-they-mean-for-you/. Accessed 19 February 2023.

“How Do You Stop a Windshield Crack From Spreading?” BEMAC. Bemac Collision Group, 23 August 2018, www.bemac.ca/blog/how-do-you-stop-a-windshield-crack-from-spreading/. Accessed 19 February 2023. 

Even though I did not take this picture, we did have the privilege of seeing this statue while we were in Paris.

The Venus de Milo

Paris is filled with various well known landmarks and artifacts, including the Arc de Triomphe, the Notre Dame Cathedral, and, of course, the Louvre. The Louvre, famously known for the Mona Lisa, the Winged Victory, and Aphrodite of Milos, is in the center of the beautiful city. Better known as the Venus de Milo, the statue represents Aphrodite, the goddess of love (“Venus de”). It stands 6 feet, 8 inches tall, absent of arms, in one of the most visited places in the Louvre (Richman-Abdou). The figure itself was carved around 150 BC, and was found on April 8, 1820 on the Aegean island of Melos (“Venus de”). Even though the sculpture was found in pieces, the material needed to be sturdy enough to last nearly two thousand years. The Venus de Milo is said to be built out of marble, but marble is a very brittle stone. With that being said, it is easy to carve but it is hard to believe the statue has lasted all these years. It was originally carved in two parts: the torso and the legs (“Venus de”). These two parts were then connected at the hips, hidden by drapery.

The Materials

The material used to build the structure, Parian marble, is similar to limestone. A largely known fact is that limestone is never a great material to use for building or foundation. What if the Venus de Milo was not built out of marble? Would we know what the arms were doing? When building sculptures, there are many other more sustainable materials to use. It is no surprise that metals are the best, most durable option to use when building a statue. The hardness and lack of corrosion of specifically stainless steel and bronze, are the best substances to use when creating a sculpture. Who knows? If the Venus de Milo was built out of steel, we might have the answers we are looking for. 

Source

Richman-Abdou, Kelly. “The Mysterious History of the Marble ‘Venus de Milo’ Statue.” My Modern Met. 20 May 2022, mymodernmet.com/venus-de-milo-statue/. Accessed 5 August 2022. 

“Venus de Milo.” Britannica. Encyclopædia Britannica, Inc., 2022, www.britannica.com/topic/Venus-de-Milo. Accessed 5 August 2022.

I took this picture as we were waiting to go up the famed Eiffel Tower – March 2022

Paris, France

In the spring of 2022, we traveled to Europe. Only so much can be done in a single week, so unfortunately we could not visit everywhere we wanted. If it were up to me, we would have spent a lengthy time in Europe and visited all over the continent, spending time in Italy, England, Austria, Sweden, and Switzerland. With that being said, I was able to travel to one of the prettiest cities in the world: Paris, France. Paris, known worldwide for the Cathedral of Notre Dame, the Louvre Museum, and of course, the Eiffel Tower, is France’s capital city and one of the major cities in Europe.

The Eiffel Tower

Not many people know this, but the Eiffel Tower actually gains height during the summer, so if it appears taller, you are not crazy. (“Why Does”). The tower itself is made out of puddled iron, which like many other metals, adapts to its environment (“Why Does”). When the outside temperature reaches high enough, it causes the metal to expand and causes the tower to grow taller (“Why Does”). When metal heats up, the particles start moving, and start taking up more space. It can grow up to six inches each summer (“Why Does”). On the contrary, at extreme low temperatures, the metal contracts and results in the Eiffel Tower decreasing in height (“Why Does”). As the metal cools down, the particles slow down. Material science is all about understanding and applying the properties of matter. With this new information about the metal of the Eiffel Tower, it can be beneficial towards understanding different metals, and how to use them appropriately.

Source

“Why Does The Eiffel Tower Change Size?” Toureiffel.paris. Sociéte d’Exploitation de la tour Eiffel, www.toureiffel.paris/en/news/history-and-culture/why-does-eiffel-tower-change-size. Accessed 5 August 2022.