ELI5- Here be dragons: An Introduction to the History of Cartography

Ever since I spent a few days lost in the tundra of Northern Alaska, I have been in love with topographical maps. I think they are incredibly beautiful, and I am fascinated by the way they depict the world so scientifically without looking like the landscape they represent. Maps of the wild and of the geo-political world fascinate me, and apparently they have fascinated the world for all of human history.

grandcanyon1 gates

The human need to map the world we live in, to record and depict it, predates the written word (Clark 6). Fundamentally, mapping is about “the transfer of information from one form of presentation into a re-presentation of that information,” an effort that is both scientific and artistic (Pickles 75). Maps are not depictions of absolute fact; any two dimensional map is inherently inaccurate in terms of shape, distance, area, and/or direction, and cartographers’ choices on which information to sacrifice have effects beyond the page.

The technology of the 21st century has improved the accuracy and detail of maps; in fact, we are more and more using photographs (think Google maps) rather than drawing or graphs to navigate the world. However, the methods of old are still used today as well. Triangulation, or using trigonometry to establish distances between objects, is still used by surveyors, especially in mountainous areas. Sonar, GIS, and satellite images have also been added to the arsenal of tools.

clay-map-babylonia-03

The oldest maps we know of (on clay blocks) were probably used to establish ownership of certain land areas (Clark 18). However, just as soon as we were mapping the earth, we began mapping the stars. Many surviving maps from centuries past were used by sailors, in conjunction with the stars, to follow trade routes. The undiscovered world was designated by images of sea serpents and other frightening creatures, with the inscription: “Here be dragons” (Casey 10). Other ancient maps were mostly artwork, adorned with elaborate pictures of gods and spirits, meant to depict the relationship between the realm of deities and the earth.

herebedragons11

During the 2nd century, the Greco-Egyptian Ptolemy (famous for his geocentric model of the universe- another map) established the convention of putting the equator in the center, and invented the concept of a prime meridian as well as longitudinal and latitudinal lines (Clark 38). Centuries later, Columbus used Ptolemy’s maps in an attempt to reach Asia by sea; the Greco-Egyptians only knew of Africa, Asia, and Europe.

The 16th-17th centuries are considered the “Age of Atlases” (Clark 116). The 1500s saw a rise in the use of pictoral representations of mountains and rivers, although altitude was not accurately scaled. In 1590, cartographer Gerardus Mercator published a book of maps depicting the god Atlas holding the world on the front cover, and the term “atlas” was born (Clark 106). By 1686, maps included wind patterns, and sailors began adjusting for the difference between true north and magnetic north (Clark 52).

atlas

However, maps are not just reflections of observations, attempts at mirroring the natural landscape; throughout history, maps have also been used as the source of truth. 16th and 17th century land disputes between France and England over North America were fueled by propaganda maps that showed differing divisions of the land (Clark 120). The borders we see between countries and states are man-made designations that we have imposed on the world and put our faith in. The famous Peters projection depicts the earth south-side up, challenging a convention started by Europeans who (naturally) placed Europe above other countries (we are just floating in space, and the magnetism of the planet switches so it truly is arbitrary).

17th

Other maps reveal truths. For example, scientist John Snow famously mapped the spread of cholera and used his findings to theorize the existence of germs (Clark 66). Maps that move through time can show the spread of a civilization or a religion.

cholera

We also use maps to depict landscapes we will never see, reaching to the arms of the universe and to our inner beings. We send million-dollar probes to Venus and use sonar to penetrate the thick atmosphere and create a graph of the topology of its surface (Clark 100). We make maps of our own brains, trying to understand it as a space with divisions and specific functions. What Lord of the Rings or The Phantom Tollbooth fan hasn’t traced the paths of the characters through the maps on the inner book cover?

lord venus

Our apparent obsession with mapping has bases in both pragmatism and the human desire for adventure. The maps of the tundra of northern Alaska, for example, were funded by the cold war military, showing details of topography and brush cover to use in the case of ground warfare. However, these lands were first scouted by the explorer Bob Marshall, who returned again and again to that land where the sun circles the sky in summer and never rises in winter for the sake of discovery. On the other end of the Earth, lives were lost in epic expeditions to the South Pole, in attempts to find the center and be the mapmakers. We are trying to map the ocean floor, perhaps for finding fossil fuels but also for the sake of discovery.

gates

As we know more of the world, we reach farther away, searching for more of the unknown. We are looking at places we may never go, planets we may never see, and yet we try to understand the lines and edges, the curve of the land and the size of the oceans. The human race is on a never ending search for its dragons.

 

 

Works Cited

Casey, Edward S. Earth-mapping: Artists Reshaping Landscape. Minneapolis:     University of Minnesota Press, 1939. Print.

Clark, John O. E., ed. 100 Maps: The Science, Art and Politics of Cartography        Throughout History. New York: Sterling Publishing, 2005. Print.

Pickles, John. A History of Spaces: Cartographic Reason, Mapping and the Geo-coded     World. London: Routledge, 2004. Print.

Images

https://soloswimmer.wordpress.com/2012/07/17/here-be-dragons/http://www.thecanyon.com/http://www.americansouthwest.net/topo-maps/north-kaibab-trail2.jpghttp://expositions.nlr.ru/eng/map_merkator/4.phphttp://www.stonegallery.info/graphics/17thmapgraphics/ml-0693.jpghttp://blogs.plos.org/publichealth/files/2013/03/John-Snows-cholera-map-of-009.jpghttp://laps.noaa.gov/albers/sos/venus/venus_shaded.jpghttp://vignette3.wikia.nocookie.net/lotr/images/7/72/Middleearthmap.jpg/revision/latest?cb=20100402045252http://www.nps.gov/gaar/planyourvisit/images/The-Gates-map-800×500.jpg

Explain Like I’m Five: Hiccups (Hiccoughs)

Hiccups (or Hiccoughs) are defined as two seemingly simultaneously involuntary contractions in the diaphragm and larynx, that causes the epiglottis to close causing the characteristic hic noise. That’s a whole lot of science to mean that something in your belly and your neck tense up causing a little flap in your throat to close. Let’s start with what happens in your belly. The diaphragm is a muscular dome that is found at the base of our breathing system.

respiration-diaphragm

Located at the bottom of our lungs it separates our lungs from the rest of internal organs. So when we breath in the muscle contracts, pushing down all the organs below, our stomach, liver, kidneys and all, so that our lungs can fully expand with air.

Next we have the contraction in the larynx. The larynx or voice box is found in our throat and contains the supraglottis, the vocal cords, the glottis, the subglottis and, most importantly for hiccups, the epiglottis.

CDR716231

The epiglottis is that little flap that’s red with blue in the center all the way at the top of the larynx. Now when we breathe in and out all that air has to travel past the open epiglottis to get into our lungs. When we swallow food, it snaps shut to keep it from getting down into the trachea (our breathing tube) and causing us to choke.

So what happens when we hiccup? Basically there is a spasm in the diaphragm. A spasm is when a muscle quickly tenses up without us using our brain to tell it to do so. So rather than normally contracting and relaxing as we breathe, suddenly it sharply contracts. At the same time in our throat, the epiglottis snaps shut and there isn’t even any food it needs to protect our lungs from! For just a moment we can’t breath, which causes us to make the hic sound of a hiccup, as the air gets stopped by the epiglottis as we try to breathe it in.

But why do we hiccup? Well the biological, sciencey explanation is our vagus nerve causes these contractions. Our nervous system controls EVERYTHING in our body. Many of them work to run our body, making it pump blood, breathe, digest food, without our having to even think about it. The vagus nerve connects our brain to our organs so that it can keep our heart at a constant rhythm, digest our food and keep our body breathing. Now the series of contractions happen when our vagus nerve gets stimulated, or tickled, in a certain way that it tells our diaphragm to contract and our epiglottis to close.

Now here is where we get to the tricky part. Scientists still have not discovered the reason why we hiccup. In fact, hiccuping, despite being found in animals as well as humans, serves no actual purpose. It is a completely useless function! Here are some possible causes:

  • Drinking fizzy drinks
  • Eating too quickly
  • Eating too much, which puts pressure on the diaphragm
  • Sudden changes in your environment’s temperature
  • Eating hot or spicy food
  • Drinking alcohol

But we still do not what it is about all of these different causes that sometimes do and don’t cause hiccups.

How do you get rid of hiccups? There are many different solutions, eating sugar or peanut butter, taking tiny sips of water, making yourself gag or, as the legend goes, scaring someone so they gasp and forget about their hiccups. None of them have proved to be the be all end all solution so keep exploring until you find out what works for you. That being said, if your hiccups last longer than 48 hours, you should go see a doctor!

Souces:

http://www.medicalnewstoday.com/articles/181573.php?page=2

What are hiccups, and how exactly can you get rid of them?

https://en.wikipedia.org/wiki/Larynx

https://en.wikipedia.org/wiki/Thoracic_diaphragm

https://en.wikipedia.org/wiki/Vagus_nerve

http://www.healthline.com/human-body-maps/vagus-nerve

ELI5: How to Read Music (The 6th Grader WikiHow Special)

Since the dawn of time, people have been trying to figure out how to write stuff. In the beginning, we didn’t have much stuff to write. Mostly grunts. Eventually we drew pictures that represented ideas; like, a cave painting of a mammoth could be interpreted as a mammoth. Eventually those pictures became words, which is how I am writing this essay!!

But how do we write down stuff we can’t see? I am talking about music, which is something that we cannot see, but we can experience. How do we write down music? Maybe you could write out instructions in English, but what if a musician doesn’t know English?! That would be very selfish of you.

There is a whole language of written music that can be understood by anyone who can read music! It is very difficult, but also very useful. Like English, you write music on lined paper, but instead of one line, you use FIVE parallel lines ~ this set of FIVE parallel lines is called a “staff,” like the people who watch you at summer camp. Instead of words, you use “notes” ~ a note changes depending on which of the five lines it is written on. Unlike, English, you can actually write music THROUGH the lines; isn’t that cool?

Image titled Read Music Step 1

There is a very easy way to identify notes. Starting from the bottom of the staff, the order of notes with a line through them (from bottom to top) is: E, G, B, D, F ~ You can remember this as Every Good Boy Deserves Fudge, which is true! The order of notes which go in between the lines is: F A C E ~ You can remember this as FACE, like the word face, which we all have. If you do not know English, you will need another way to remember these notes, because Every Good Boy Deserves Fudge and FACE will not mean anything to you.

Once you know the notes, you almost know how to read music! You should also know about meter. In math class, we were taught that a meter is a little longer than a yard; the meter we use in music is totally different! Meter in music tells you how fast the notes are read ~ sortofliketakingoutspacestellsyoutoreadthisquickly! I mentioned math class because meter is actually a number ~ it is a fraction, like ⅜  or ¾. In this way, math is important no matter what language you speak!

There are many other things you must know to read music. Sometimes, you do not want to make any sound at all; you can show this by drawing a rest, which looks like a squiggle or a hat, depending on how long you  have to be quiet. English would be very confusing if there were no periods you would have no idea where to stop or where to start that is why music has something like a period but instead of a dot it’s a vertical line through the five horizontal lines that means the end of a musical sentence.

There is also a special symbol called a cleff, which looks like a very fancy cursive letter. If you do not know cursive, you should learn, because you will need it in everyday life as an adult. In chorus class, we use the treble cleff, which means that the notes written in the staff are kinda high. In grown-up choruses, they sometimes use the bass cleff, which means that the notes written in the staff are lowish.

In the end, I would say that reading music is very difficult but very fun. To conclude, I would say that if you do not know how to read music, you should learn to as it is a very useful skill.

 

 

Single source? Now that’s good research!

http://www.wikihow.com/Read-Music

Explain Like I’m 5: How Memory Works

To understand how memory works, lets start with the functions of different parts of the brain:

The prefrontal cortex processes short term memory, such as a sign on the highway or the room number of a hotel room.
The amygdala helps store conscious and unconscious emotions. It also stores emotional memories.
The hippocampus is used for transferring memories from short term to long term.

Now what is the difference between short term and long term memory anyway?

Short term memory lasts about 15 to 30 seconds and is supported by regular brain activity in the prefrontal cortex.
Long term memory actually has a physical presence in the brain, stored in the prefrontal cortex so that it can be accessed later.

There are two categories of long term memory:
Implicit– remembered habits and skills
Explicit- things that we are actively trying to remember. There are two types of explicit memories: episodic memories (things that happened to you) and semantic memories (general knowledge)

How does the brain actually store these long term memories?

a process called encoding. The hippocampus links all relevant information together into one memory by connecting neurons so that signals can pass from one to the other. Basically, it’ll connect elements of one event into single episode or memory so you don’t have separate memories of how that event smelled, looked etc. It also decides what information is important to keep in the long term memory. Priorities include memories with strong emotional components and memories rehearsed repeatedly in short term memory (which is how you retain the information you study, for example).

Once a new memory is formed, the neurons with that memory stay in the hippocampus for a while before moving further in the cortex. Long term memories are stored based on the strong component of that memory–for example, a spoken memory will probably be stored near the language centers. You can also have memories stored in multiple places.

Why are some memories stronger than others?

Whenever you think about a memory, you make that memory stronger in your mind. By reactivating the memory, you can cause the memory to be stored again in different part of your brain, literally increasing it’s “rent space” in your brain. Due to this factor, memories are always being changed and updated, so you won’t remember your memories as you did the day before (if you’re thinking about them).

If our memories changes, how can we be sure that we remember them correctly?

The answer is that we can’t be sure. Because our memories can evolve as we think about them, it’s very easy for them to change based on our thoughts. Studies have shown that many innocent people confess to crimes they did not commit because of a false memory that was implanted in their head. These people have no reason to confess–in fact, they have much more reason to lie; and yet, they are still convinced they committed a crime. As our memories are subject to change, they are by nature unreliable.

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Works Cited
Burnett, Dean. “What Happens in Your Brain When You Make a Memory?” The Guardian. Guardian News and Media, 16 Sept. 2015. Web. 23 Feb. 2016. <http://www.theguardian.com/education/2015/sep/16/what-happens-in-your-brain-when-you-make-a-memory>.
“How Does Memory Work?” Queensland Brain Institute. The University of Queensland, n.d. Web. <https://qbi.uq.edu.au/brain-facts/how-does-memory-work>.
“Parts of the Brain – Memory & the Brain – The Human Memory.” Parts of the Brain – Memory & the Brain – The Human Memory. N.p., n.d. Web. 23 Feb. 2016. <http://www.human-memory.net/brain_parts.html>.
“People Can Be Convinced They Committed a Crime That Never Happened.” Association for Psychological Science RSS. N.p., n.d. Web. 23 Feb. 2016. <http://www.psychologicalscience.org/index.php/news/releases/people-can-be-convinced-they-committed-a-crime-they-dont-remember.html>.

 

 

 

Explain Like I’m Five: The Federalist Papers

The Federalist Papers, originally known as “The Federalist” were a series of eighty-five essays written between October 1787 and August 1788 that argued in support of the newly drafted U.S. Constitution. The essays were written by Alexander Hamilton, John Jay, and James Madison, all under the pseudonym “Publius”. The pseudonym, chosen in honor of Publius Valerius Publicola, was picked by Hamilton, as Publius was essential to the founding of the Roman Republic. Hamilton felt that this would hopefully parallel the importance of the Federalist Papers in the ratification of the Constitution. The essays were published in a series of newspapers, The Independent Journal, The New York Packet,  and The Daily Advertiser and all were published anonymously. It wasn’t until Hamilton’s death in a duel with Aaron Burr that he was revealed as one of the authors. It is widely believed that Hamilton wrote fifty-one of the essays, Jay wrote five and Madison wrote twenty-nine. Jay was going to contribute more, but fell ill after writing four (numbers 2-5) and so didn’t write another essay until number sixty-four.  Madison disputed these numbers, claiming he had written more than his twenty-nine, but none of the authors ever released a breakdown of authorship, so the exact who wrote what is still up for debate, and will never be known for sure. Only seventy-seven of the essays were originally published, and the other eight were added in later when the collection was published. 

Hamilton masterminded the Federalist Papers as a way of garnering support for the Constitution. All three authors of the Federalist Papers were strong nationalists, hoping to increase public support for the new Constitution, which was written to replace the old Articles of Confederation, and it had to be passed by nine of the thirteen states. The Federalist Papers were written to counteract opposition that the Constitution would create a large, tyrannical central government that would infringe on state’s liberties. They instead argued that the proposed government as outlined by the Constitution would keep the Union from falling apart and would give the federal government the ability to act with authority in the national interest. They pushed the idea of checks and balances, outlining how the Constitution’s clear outline of defined powers of the government would be the best way to protect the individual rights of each state.

While it is not fully clear how much of an impact the Federalist Papers had on the public at the time (although, the Constitution was obviously ratified), they have since been compiled and are widely studied in conjunction with the Constitution as a great analysis and interpretation for the founding principles of the United States.

References

“Federalist No. 1 | Teaching American History.” Teaching American History. Ashbrook Center, n.d. Web. 23 Feb. 2016.  http://teachingamericanhistory.org/library/document/federalist-no-1/
“The Federalist Papers.” The Federalist Papers. Oak Hill Publishing Company, n.d. Web. 23 Feb. 2016. https://www.constitutionfacts.com/us-articles-of-confederation/the-federalist-papers/
“Federalist Papers.” History.com. A&E Television Networks, 2009. Web. 23 Feb. 2016. http://www.history.com/topics/federalist-papers

Explain Like I’m Five: Albinism

Albinism is a melanin defect. Melanin is the substance that gives color to the hair, skin, and eyes. Therefore, those with albinism have little to no coloration in these body parts. It occurs in one in every 17,000 people worldwide and can affect people of all races or ethnicities. The most severe form is called oculocutaneous albinism, in which hair, skin, and eyes are light pink or white. People with this type of albinism also often have vision problems. These vision problems result from a poorly developed fovea, which means that people with albinism have to turn their heads until they find a point of focus. The optic nerve and retina are also impaired, which causes faulty depth perception and decreased ability to absorb light. However, the vision problems that result from albinism are non-degenerative, meaning that they will not worsen over time. Many forms of albinism are also associated with crossed eyes and rapid eye movements. Other variations of albinism include: ocular albinism type 1 (OA1), Hurmansky-Pudlak syndrome (HPS), Chediak-Higashi syndrome, tuberous sclerosis, Waardenburg syndrome, and Griscelli syndrome. These rarer and more serious versions of the condition can involve bleeding disorders, bruising, lung problems, intestinal disorders, and lower immunity.

Albinism can be caused by several genetic defects. Therefore, genetic testing, especially for those who have a family history of albinism, is the most effective way to diagnose the disorder. In general, it is an inherited genetic condition. Most forms are recessive, which means that children with albinism are often born to parents with normal pigmentation who are carriers for albinism.

Albinism cannot be cured but symptoms can be relieved with treatment. Most treatments involve protecting a person with albinism from the sun with sunscreen and sunglasses. Those with more severe albinism may need glasses or eye surgery to correct vision problems and abnormal eye movements. Albinism does not usually affect lifespan but it can cause complications such as blindness and skin cancer. It can also limit the ability to participate in certain activities because of intense sun sensitivity. Though it is a lifelong condition, people with albinism are generally able to function normally and maintain a high quality of life.

References:

“About Albinism.” The Vision for Tomorrow Foundation. Web. http://www.visionfortomorrow.org/about-albinism/

“Albinism.” MedlinePlus. U.S. National Library of Medicine, 29 October 2013. Web. https://www.nlm.nih.gov/medlineplus/ency/article/001479.htm

“Albinism: Frequently Asked Questions.” The Vision for Tomorrow Foundation. Web. http://www.visionfortomorrow.org.php5-20.ord1-1.websitetestlink.com/albinism-faqs/

“Genetics and Types of Albinism.” The Vision for Tomorrow Foundation. Web. http://www.visionfortomorrow.org/genetics-of-albinism/

“Melanin.” MedlinePlus. U.S. National Library of Medicine, 27 October 2014. Web. https://www.nlm.nih.gov/medlineplus/ency/article/002256.htm

 

 

What is Feng Shui, anyway?

 FENG SHUI

The words “feng” and “shui” mean “wind” and “water”, respectively. These two natural elements together evoke balance, purity, and tranquility — all things that the feng shui practice is based on.

Feng Shui is an ancient Chinese concept unrelated to religion that is also known as the ‘art of placement’. It is a practice that explores the relationship between a person and the objects around them. Not only does feng shui often mean the readjusting of furniture to create balance, it can also mean changing up the relationship between a person and their possessions. The goal of feng shui is that, through shifting the dynamic between the self and the environment, we can achieve a better state of “chi”, or life force. Essentially, feng shui is a practice that relies on the idea that harmony and balance in personal spaces can create inner peace.

One of the more interesting things about feng shui is that it suggests that all objects — both animate and inanimate — are alive, and are therefore able to change the energy in a space. The decluttering of a desk, for instance, could bring good fortune to the homeowner. Different variations of feng shui might include changing paint colors to mend broken relationships, or changing the direction of your bed so that your feet don’t face the door, which promotes relaxation and wellness.

Other principles of feng shui include implementing curved lines in the home and putting mirrors at the ends of hallways to allow “chi” to more easily pass through the house.

The concept of Yin and Yang is also crucial to feng shui. Yin and Yang are two opposite forces that cannot exist without each other. Whereas in the Western culture we have binaries in which one element is better than the other (for example, light is better than dark, good is better than evil), the Chinese culture stresses a harmony and coexistence between Yin and Yang. Drawing on the balance of Yin and Yang, feng shui encourages a balance between us and our surroundings.

Unfortunately, in more modern day applications, home decorators will often claim to be using feng shui when they have not been properly trained in the practice. Though many consider it to be a superstitious idea, Feng Shui is taken very seriously by many architects and designers. There is a school in Los Angeles called the American Feng Shui Institute that focuses on the more scientific aspects of feng shui using astronomy and philosophy.

Overall, feng shui is an ancient practice that has many modern day applications; I think it’s safe to say that it can’t hurt to try!

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Sources:

Trust, Deanna. “Tree of Knowledge: WHAT IS FENG SHUI?” Tree of Knowledge: WHAT IS FENG SHUI? Off the Beaten Path, n.d. Web. 20 Feb. http://www.saintsandcircles.com/pages/tree_pages/feng_shui/_index_whatis.html.

American Feng Shui Institute. N.p., n.d. Web. 20 Feb. 2016. <http://www.amfengshui.com/faq/>.

“Feng Shui.” Feng Shui-Table of Contents. N.p., n.d. Web. 20 Feb. 2016. <http://iml.jou.ufl.edu/projects/spring04/McDonald/html/tableofcontent.htm>.

Links to diagrams!

Desk Feng Shui – You can see that plants on the desk in the right corner can help with relationships, a notebook in the bottom left corners aids with wisdom, etc.

Bedroom Feng Shui  – Note that the foot of the bed doesn’t align with the doorway, and there are bedside tables on either side to create balance.