3D movie glasses and light polarization

Have you ever watched a movie in 3D at a movie theatre? You probably had to wear special glasses in order to get that 3D effect. And if you take them off, the movie looks completely blurry.

The most common way of producing the 3D image is through the use of polarized filters. This principle works by projecting the movie from two different perspectives at the same time, with the light being polarized in a different way in each projection. The polarization refers to the orientation the waves are travelling in, which means multiple light waves of different polarizations can be still travelling in the same direction! Continue reading

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Potato chips and asparaginase

Have you eaten any fried potato product recently? You do know how unhealthy those things are, right? Not only because of the fat and carbohydrate and sodium content, but possibly because of the presence of acrylamide. Acrylamide is a potent neurotoxin and a possible carcinogen, which is often used in laboratories for making gels to separate proteins. [1]

Potato chips, also known as potato crisps, are a fried potato product that may have unhealthy levels of acrylamide. Credits: Wikimedia

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Endogenous retroviruses and disease

Did you know that there are retroviruses in the human genome? In fact, there are retroviruses in the genome of all mammals. These viruses have previously integrated their DNA into our ancestors’ DNA, and have degraded to the point that they can no longer replicate and infect other cells. However, they still contain some of the characteristics of retroviruses, such as long terminal repeat (LTR) regions and gag, pol, and env genes. [1]

It has been suggested that these human endogenous retroviruses (HERVs) may modulate gene expression. [1] For example, the release of amylase into saliva may be regulated by a HERV that acts as a promoter, and apolipoprotein C1 (a protein that helps with lipid transport) may be regulated by a LTR from a HERV. [2] Continue reading

BIOL 204: Vertebrate Structure and Function (Review)

One does not truly know what a vertebrate is…until they’ve taken BIOL 204. BIOL 204 is a 3-credit course that teaches the phylogenetic relationship between vertebrates as well as their physiologies from a comparative point of view.

FORMAT OF THE COURSE

There is a lecture and a lab component to the course. The lecture content was easy to understand, but there was a lot of information that we had to know. Thankfully, Stella was a really nice and approachable professor, and she always took the time to answer our questions.

The lab enhanced my understanding of the topics we covered in class by providing the opportunity to examine structures in more detail; we even got to dissect a pigeon, a rat, and a dogfish!

There were lab quizzes (in the style of group discussions) at the end of each session, and two lab exams, where we circulated the room and answered questions related to structures on display. Continue reading

ATSC 113: Applied Meteorology (Review)

Looking for an online course to take? Consider ATSC 113, a 3-credit science course that teaches weather concepts related to flying, snow-sports, and sailing.

FORMAT OF THE COURSE

All of the assignments and midterms were online, except for the final, which may be taken online or in-person depending on the section you’re registered in. There were weekly readings and quizzes, two midterms, a bonus project, and a final.

The assessments were multiple-choice, and the answer options were quite straightforward. Most of the weekly quizzes had two attempts, so I could learn from my mistakes. 

This course requires self-learning 100%. There aren’t any live lectures; you learn everything from the online readings (no textbook to purchase – yay!). Continue reading

Things I Wish I Knew in First Year

Transitioning from high school to university can be very tough. There are many things we wish we knew when we started our undergraduate journey. But worry not, we have put together a list of things we wish we knew in first year.

I wish I knew #1…

Having an idea what major you want to do in second year is important, even if you don’t declare majors in first year. This is because many second year majors have different prerequisites. If you know what majors you’re interested in, you could potentially skip some boring general first year science courses.

I wish I knew #2…

This is mostly for commuter students. Try to plan so that you do not have to go to school on some days. This saves a few trips back and forth. Even with online schooling, we recommend having days without scheduled classes so you can have a small break. Continue reading

Staying Focused During Online Classes

With online classes becoming the new norm, it is essential to adapt to this new learning environment. How does one stay focused when Facebook is now literally a click away? We have come up with a list of tips that help keep you focused on your online lectures and screen casts.

Tip #1

Close bookmarks to any social media sites. This makes accessing them less tempting because they won’t be in sight.

Tip #2

Keep your phone out of reach. It’s very easy to pick up your phone and start texting and browsing social media when your phone is right next to you. Make it a hassle for yourself to get your phone by keeping it far away. Continue reading

CHEM 300: Communicating Chemistry (Review)

We all know that journal articles can be a challenge to read, so how does the general public stay updated about scientific breakthroughs or findings? CHEM 300 is a course that focuses on the different levels of scientific communication and how to write targeting different audience groups.

FORMAT OF THE COURSE

The scheduling was a bit weird for this course. There were two 50 minute lectures and one 90 minute lecture a week. The shorter lectures were very interactive and contained activities that you would not expect in a chemistry course. I remember Dr. Kil made the whole class throw their hands up speaking gibberish just so he could emphasize that embarrassing yourself in a presentation isn’t the end of the world.

The bulk of the work was outside of lecture time, as this was a writing-intensive course. Admittedly, the longer lectures were a bit dry as sitting through 90 minutes of someone teaching you how to write and present can be tedious. Continue reading

Phone charging and electromagnetic induction

Do you have a phone that has wireless charging capabilities? It can seem almost magical at times. It can also be pretty convenient, although charging with a wire can also have its advantages.

But how does it work? In the charging pad, there is a coil of wire that has a current running through it. [1] According to Ørsted’s law, an electric current will induce a magnetic field around it. This is used in solenoids, for example, a helix of wire that creates a relatively uniform magnetic field inside.

A cross section of a solenoid showing the electric current going out of the page on the top, around, and back into the page on the bottom. This creates a magnetic field going right. The direction of the magnetic field changes when the direction of the current changes. Credits: Wikimedia

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