It has been a while since I had a chance to blog. Between classes, work, and life, it’s really hard to keep the promise I made to myself about writing regularly.
Anyway, here’s what had happened between my last post and now.
The Qualifying Exam aka The Ph.D. Lottery:
This was perhaps the biggest achievements for this year. My friends and I took the Ph.D. qualifying exams – a daunting, haunting, four-hour long exam that determines whether you are qualified to pursue a Ph.D. in Purdue.
Most of us, including myself, passed by a respectable margin.
The Soham Saha Library:
The West Lafayette Public Library was having a fundraising sale last month. You could get a bag of books For just three dollars. I always dreamed of having my own library. And thus, the Soham Saha Library was born.
I have never been an ardent reader of non-fiction and thought this would be a good time to start reading them. I ended up buying about thirty non-fiction books, and am currently reading whenever I have free time.
Some of the notable ones among the books:
– The Nobel Duel, by Nicholas Wade – a true story about the rivalry between two Nobel Laureates in Medicine. This is for inspiration.
– The Idea Factory, by Jon Gertner – It’s about the inception of Bell Labs and the brilliant innovations that took place there. It’s an interesting book on the research dynamics of one of the best Labs the world has ever seen.
– Writing Science: How to write papers that get cited and proposals that get funded, by Joshua Schimel – for obvious reasons.
If you happen to have an office at the Birck Nanotechnology Center and are walking past Room 1238, drop by and take a look. You might find something you like.
Made some new friends, learned how to kickbox, the usual random things I do.
Oh yeah, also, the Presidential election happened. But that is too much for one post.
- The Matrix – They presented a technology idea to integrate a pressure sensor at the tip of surgical equipment that would help doctors to get a feel of how much pressure they are applying to a tissue during surgery.
- Kiragucci – They proposed colour changing fibers to design tents that could blend into their surroundings.
- Four photons – They proposed a high precision optical blood pressure monitor.
- Synergy Energy Solutions – They started off with the same idea as us, but went on to focus on controlling the light transmission in greenhouses, using colloidal particles flowing through microfluidic channels.
The red charged particle (Particle 1) is producing a field B1. The blue particle (Particle 2) is moving through the field upwards. As it does so, it experiences F21, which pushes it to the right side, as shown by the red arrow.
According to Newton’s third law, Particle 1 should also feel a magnetic force F12 to the left, created by Particle 2. However, since the field produced by Particle 2 (B2) is zero at point 1, Particle 1 feels no force acting on it when it is directly underneath Particle 2.
So, F12 = 0.
Newton’s Third Law does not apply.
If you want to dig deeper and understand why momentum is still being conserved in this scenario, you can mull over reference 3. It’s explored there in great detail.
[Note: I am omitting the Coulomb forces the particles are exerting on each other. They are equal and opposite. It’s the magnetic forces that aren’t obeying Newton’s Third Law.]
- Fig2: http://www.bbc.co.uk/schools/gcsebitesize/science/triple_aqa/keeping_things_moving/the_motor_effect/revision/3/
I started this blog as a collection of snapshots of my PhD life, with my short term and long term goals, achievements, ideas and epiphanies, major life events, and basically anything else that is related to my research life.
Here’s a tentative list of what this blog will comprise:
- Literature review: I will summarize interesting papers I review in the course of my PhD.
- Tutorials on electromagnetism and related problems.
- My thoughts on recent events that occur in the scientific community.
- Experiences in the cleanroom.
- Announcements on upcoming events – conferences, symposia, and workshops.
For tutorials, I will try my best to follow a simplistic approach, keeping jargons and complex mathematics to a minimum. I’ll take the same approach for any journal article I summarize and review.
This is not a complete list, and I am going to keep updating it as I get new ideas for posts.