I heard references to articles that Amit Varma writes for ESPNcricinfo on his podcast, The Seen and the Unseen. When I heard these many times, I got curious and went online to check out the website.
The website has articles and live scores. Currently, the focus seems to the India West Indies test series and The Ashes. I read a few articles but didn’t understand much as I had stopped watching cricket since Ajay Jadeja quit following a match fixing scandal in the late 90s. I failed to find any article that was interesting for me.
I read a Twitter thread yesterday by Siddhartha Vaidyanathan on Prof. Sankara Rao and how his interest for cricket and sharing scores by listening to cricket scores on BBC on his short wave radio inspired an online community and led to websites like cricinfo which was established in 1993.
At the end of the thread, Siddhartha Vaidyanathan shared an interesting article written by him on the occassion of ESPNcricinfo’s 25th anniversary. This follows the role played by cricket enthusiasts in the US and Australia and the role they played on what enables you and me today to catch cricket scores online.
Today, ESPNcricinfo powers the score updates one sees on Google. This is visible as notifications on our mobile phone. The website gives me a stand alone website that is part of the social internet which enables me to follow cricket again, if I want to.
I had written earlier about wanting to move towards Social Internet on this blog earlier. The move feels more urgent as I changed careers and moved to a more creative career field.
When you’re on Twitter or similar social media websites, you are bombarded with information. This information, though, is about different topics. To process this information, the brain does something called “context switching”. Cal Newport, a computer science professor, working with Georgetown University has written extensively on his blog about the cost context switching has on our brain. In short, this affects our attention span. He suggests a mental declutter of thirty days in his new book, Digital Minimalism.
Besides the cognitive costs, it also affects our world. It enriches a few corporations that gains by selling our data to advertisers. This leads us to “walled gardens” that affect our privacy. We do not have a clear picture about what data we give to corporations and how, in turn these corporations use our data.
Some of my friends have also started moving from corporations on to blogs of their own. Their dusting off old blogs that they once maintained and renewing them. A recent one I read about is Karthik’s. I am trying to get other friends to start up their blogs as well. This is where you have control on your content and data.
Tobi Lutke of Shopify is also working towards making shopping online social again. Recently, I was talking about a friend about cameras and that night I saw ads for cameras on Amazon. The Amazon app on your phone has permission to make calls. Is it listening to you as well? Shopify is now considering taking on Amazon. Tim Bradshaw has a nice article in Financial Times that describes the social shopping experience that Shopify seeks to build.
I am not advocating quitting social media. I am only saying that you need to be aware of how you give data away to corporations who make money off it. At the very least, I hope there is a thriving Social Internet that thrives along with Social Media.
The Chandrayaan 2 spacecraft entered into an orbit around the Moon on August 20, 2019 at 09:02 AM (IST).
This was a result of a lunar orbit insertion (LOI) manoeuvre the spacecraft performed that lasted about 1738 seconds. The spacecraft was in Earth orbit and used it’s gravity to be propelled towards the Moon. As the spacecraft reached close to the Moon it used its on-board motor to perform a breaking to decrease its speed (this was demonstrated in Mission Mangal) and allowed itself to be captured by the Moon’s gravitational force.
The spacecraft entered into a 114 km x 18,072 km orbit around the Moon. This means that the spacecraft’s closest distance from the Moon (caller perilune) is 114 km and it’s farthest distance (called the apolune) is 18,072 km. The next day it performed another similar manoeuvre to reduce its speed and moved into an 118 km x 4,412 km orbit. This is the opposite of what it did in Earth orbit and will continue till it achieves a circular orbit of 100 km.
Today, ISRO released pictures taken by the LI4 camera on board the Vikram lander of the Chandrayaan 2 spacecraft. LI4 probably stands for Landing Imager 4. It should be one of the cameras on the lander that would be used to guide the lander to the surface of the Moon.
The next manoeuvre is slated for August 28, early in the morning. You can follow the updates of Chandrayaan 2 directly from the ISRO website page.
The first evidence of helium was observed on August 18, 1868, as a bright yellow line with a wavelength of 587.49 nanometers in the spectrum of the chromosphere of the Sun. The line was detected by French astronomer Jules Janssen during a total solar eclipse in Guntur, India.
The article is also a study of the work done in India by the French at the dawn of the field of astrophysics in the middle of the 19th century. Pierre Jules Cesar Janssen (1824 – 1907) had come to India to observe the total solar eclipse on August 18, 1868. Gustav Kirchoff’s work on using the solar spectrum to understand the chemical composition of the Sun was applied using a spectroscope.
The spectrometer separates elements of the electromagnetic spectrum and identifies elements by matching the spectrum to the wavelength of each element.
During the eclipse, Janssen was observing the solar prominence. These are gases that are blown off the Sun but still connected to the Sun’s surface. While studying these gases with a spectroscope, Janssen observed hydrogen gas but also observed light in another spectrum which did not correspond to any known element at the time. The observed spectrum was so bright, in fact, that Janssen thought that he did not have to wait for an eclipse to observe them again.
He was stationed at Guntoor from August 18 to September 4 when he observed the same spectral line each day. To continue studying the Sun on a daily basis, he built an instrument called a spectrohelioscope that he used to observe the Sun from Shimla.
His spectrohelioscope was used by other observers till 1891 when it was superseded by a spectroheliograph. Edward Frankland named this new element Helium after Helios, the Greek word for the Sun. When Janssen returned to France, he became Director of a new astrophysical observatory that the French government had built in Meudon, on the outskirts of Paris. He was President of the French Astronomical Society from 1895 to 1897.
I have been listening to IVM Podcast’s The Seen and the Unseen podcast hosted by Amit Varma since about the last year or so. The important I learnt in lesson in this episode that the usual tags of left and right politics do not apply to Indian politics. Indian politics can be better understood based on the ideologies of identity and statism.
Amit’s earlies episodes espouses the classical liberal ideologies and are based on the idea of individual freedom. While the explanation made theoretical sense, it didn’t quite apply when I analysed many macroeconomic issues to try and understand why the government acted in the way it did. Hence, Amit’s episodes were critical of any government that was at the Center.
This particular episode presented a better political lens to understand the Indian political landscape. The episode is based on the book Ideology and Identity by Pradeep K Chhibber and Rahul Verma. Rahul Verma explains the terms ideology, identity and statism. He then takes us through Indian history post-independence as seen through the lens of identity and statism and explains how this bifurcation of Indian history makes more sense than the western right-wing and left-wing narrative.
The episode held several insights for me. That India had a rich “conservative” tradition but this was hidden from English readers like me. These traditions existed in the vernacular press in Hindi, Marathi etc. An earlier episode began digging at some of the features of the conservative tradition in India which seems to have been so different from the conservative traditions in other countries. It has been a fascinating listen for me.
I haven’t read the book but would definitely suggest listening to this episode if you want to decide either way about getting their book.
I went to PVR Cinemas at Pune’s Phoenix Marketcity Mall to watch Mission Mangal on Friday, August 15, 2019. Being a self-professed space geek, I expected the movie to be a cringe-show. It was.
Mission Mangal (2019) is a Bollywood movie inspired by the Mars Orbiter Mission (MOM). The mission involved the Indian Space Research Organisation (ISRO) flying a mission to Mars. The mission, a technology demonstrator, succeeded on it’s first attempt. The movie carries a disclaimer at the start of the movie which says that it is a fictionalised account.
The on-film depiction of ISRO is no where near it’s original. I don’t think a scientist in ISRO are insecure in their knowledge that they would feel threatened by a person who got his experience working in NASA and who returns to serve his country. This is the description of the villain of the movie. I think MOM borrowed and learnt a lot from NASA for the actual mission. MOM’s first signal acquisition was in fact from NASA’s Deep Space Network in Australia. I don’t think the movie really needed a villain.
The other issue that bothered me a lot is the need for a hero. Akshay Kumar is no where near the scientist that ISRO has. His imitation of talking to former President Abdul Kalam in Tamil was the lowest point of the film, in my opinion.
The Polar Satellite Launch Vehicle (PSLV) was made much more muscular and eye-candy than it actually is. There were a lot of holds on that American launch pad. Bollywood also made it into a two stage launch vehicle rather than the four stage rocket it is. I loved the sound and capture of the lift-off which reminded me so much of the Shuttle launches. India countsdown in minutes and seconds and not from 100 seconds.
There are struggles of the women scientist in ISRO. Tackling pressure at home, managing family, managing expectations of mother-in-laws, difficulty in getting a flat because of belonging to a certain religion and live-in-relationships. I would have been happier if these stereotypes would not all be pushed throughout the film. Also, I didn’t miss the stereotype of a woman who could not drive on road handling navigation for an interplanetary mission.
So, with all those things that I didn’t like in the movie, it still pulled through because it manages something that I think ISRO fails at communicating. How difficult it is to get funding for a mission. What parameters are considered and how difficult it is to plan a mission. It also attempted to explain orbital mechanics. The movie takes a dig at superstitious practices that ISRO itself follows. Akshay Kumar’s only positive show in the movie seems to be standing up as a rational person to some superstitious practices in the Mission Control Room.
I still think that the movie is a good starting point for a movie based on a scientific mission. For that, it is worth seeing. As I said at the beginning, I cringed a lot while watching the movie.
Chandrayaan 2, India’s second mission to the Moon lifted off from Sriharikota on July 22, 2019. The spacecraft was launched on board India’s GSLV Mk-3 rocket on it’s maiden non-development flight.
It came after a launch scrub surrounding which there was lack of information and a lot of speculation. I watched the launch with my grandmother in Mumbai.
Since the launch, the spacecraft which currently has an orbiter and lander attached to each other performed 5 orbit raising manoeuvres on the way to the Moon.
India adopted this gradual orbit raising manoeuvre in order to balance the limitation of the spacecraft and the launch vehicle. A lower mass of the spacecraft would enable the launch vehicle to place the spacecraft into lunar orbiter but it would then not be able to carry any meaningful payload. The launch vehicle had only enough power to place Chandrayaan 2 in a geosynchronous transfer orbit.
After the 5th orbit raising manoeuvre, the spacecraft will push off towards the Moon called Trans Lunar Insertion on August 14. Afterwards, the spacecraft will perform one more burn called the Lunar Orbit Insertion on August 20 that will let the spacecraft be captured by Moon’s gravity.