I am a Materials Girl

Category: History

a New England summer

This past summer we went all over New England making stops in Nantucket, Boston, Newport, and Upstate New York. We spent the Fourth of July in Boston, Massachusetts, and learned a lot about the history of the city through various tours and other activities. We went to a Red Sox game at Fenway Park and also had the privilege of watching the Boston Pops perform live. There are various college campuses in Boston as well, so we visited Harvard and Massachusetts Institute of Technology (MIT). One sightseeing tour we went on was the duck tour that lets you see the city on both land and water. Our tour guide did a phenomenal job and pointed out many interesting facts about Boston. When we were in Beacon Hill, one of Boston’s oldest neighborhoods, he mentioned the glass in this neighborhood. Some buildings still had original glass from the early 1800s, and he knew this because of its purple color.

Purple glass

Between 1818 and 1824, England sent glass to Beacon Hill that had too much manganese oxide. It looked normal when first installed, but after it was exposed to sunlight, it turned purple and all of these buildings had purple glass (“The Story”). This is because the ultraviolet light from the sun initiates an electron exchange which turns the colorless glass purple. This entire batch of glass turned purple, so it is easy to identify its date of origin. All of the original glass in Beacon Hill is purple, and all of the updated glass is colorless. Boston is such a unique city with history everywhere you look. Even its glass is filled with so much history.

Here is a purple windowpane I took a picture of when we were walking through Beacon Hill (July 2023).

works cited

“The Story Behind Beacon Hill’s Purple Windows.” New England Living, 11 Apr. 2023, newenglandliving.tv/the-story-behind-beacon-hills-purple-windows/.

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.

This is an image of the Challenger explosion in 1986. Source: https://i.natgeofe.com/n/20a3d8bf-9cca-49af-9f13-05e9c537a5aa/31734_3x2.jpg

THe Shuttle

I know I have mentioned him before, but I have a younger brother who is now 10 years old. I feel like all boys of his age have similar interests of dinosaurs, cars, space, and pretty much all sorts of vehicles. Since it is just him and me, he knows a lot about what I am interested in and I know a lot about what he is interested in. He knows a lot about space and rockets of all sorts, but it also helps that we live near the Kennedy Space Center in Cape Canaveral, Florida. I have gone there countless times as they have many sites to explore. One main attraction of theirs is the Atlantis Space Shuttle, one of only four left in the world. The Discovery Shuttle is at the National Air and Space Museum in Washington DC, which is another shuttle I have had the privilege of seeing. The other two, the Endeavour and the Enterprise, are in other museums in California and New York. With that being said, there were actually six shuttles built by NASA. The Challenger exploded during launch on January 28, 1986 and the Columbia exploded during re-enter on February 1, 2003.

The Cause

It is known by all that the Challenger Space Shuttle exploded resulting in the deaths of seven passengers, but not everyone knows the real cause of this casualty. A tiny rubber part of the shuttle called the O-ring was the source of the problem. It served as a seal between parts of the solid rocket boosters, but lost its elasticity when exposed to cold temperature (Teitel). The O-ring only works properly above 54 degrees and on January 28, 1986, it was 36 degrees (Teitel). The temperature was so cold, the O-ring did not expand properly and could not prevent the leak (Teitel). The liquid-hydrogen leaking from the booster mixed with the liquid-oxygen tank and the shuttle exploded (Teitel). The Challenger explosion was an unforgettable incident and has taught NASA a lot so that history will not repeat itself.

The Source

Teitel, Amy Shira. “What Caused the Challenger Disaster?” History. A&E Television Networks, LLC., January 28, 2022, www.history.com/news/how-the-challenger-disaster-changed-nasa. Accessed 2 January 2023.

The Titanic

I have a younger brother who is four years younger than me. He is interested in a variety of subjects, one of which being the sinking of the Titanic. I found this really interesting as well, as I am also a fan of the 1997 cinematic masterpiece: Titanic, directed by James Cameron. At 2:20am on April 15, 1912, the Titanic ship sank. Carrying 2,200 passengers and crew mates aboard, this massive ship hit an iceberg sitting just 100 feet above sea level. Just recently we were on a long car ride and had endless hours to pass when we stumbled across a podcast called: Materialism: A Materials Science Podcast, hosted by Taylor Sparks and Andrew Falkowski. Episode 42, What Really Sunk the Titanic?, goes further into detail about the reasons behind the ship’s sinking, which, of course, is something I was curious about learning.

This is a picture of the Titanic. Source: https://cdn.britannica.com/79/4679-050-BC127236/Titanic.jpg

The Metals

In 1912, metal had higher concentrations of certain elements than it does today, in 2022. When the Titanic was being built, the metal used had a higher concentration of sulfur, whereas today’s metal has a higher concentration of manganese (Falkowski and Sparks). This affects the brittle/ductile point of the metal. Brittle shows how breakable something is, and ductile shows its ability to bend. Today’s metals have a much lower point at which something goes from brittle to ductile because of the concentration of manganese. Manganese increases the ductility of metals, suggesting with less manganese, like the metals from 1912, the more brittle it is. This shows how if the metal of the Titanic had more manganese, it would have had a higher chance of withstanding the iceberg. If there was less sulfur, the Titanic would not have sunken, and so many lives would not have been lost. With that being said, we would not have the privilege of watching Cameron’s sensational film: Titanic. 

SOurce

Falkowski and Sparks, Andrew and Taylor. “What Really Sunk the Titanic?” Materialism: A Materials Science Podcast, Episode 42, 18 June 2021, materialismpodcast.com. 

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.