Experiences of a common man!

Tag: science

On Scientific Inquisition

We humans have always been guided by two fundamental systems: Faith and Science. Faith implores us to live life as it is and accept what comes in life as the will of God or fate. It has its own pros and cons, which I shall not discuss here. Science, on the other hand, urges us to transcend the boundaries that are created by our surrender to the fate. The advancement in medicine and technology is the result of inquisitive minds who studied the nature and imagined what else they could do with the knowledge they gained. They also disseminated the knowledge they obtained so that it would not be lost with time.

Suppression of knowledge and scientific inquisition in Europe during the Middle Age (5th to15th century) led to numerous wars, widespread famine and submission to fate. During this period in the history of humanity, also known as the Dark Age, several scientific discoveries are said to have lost. Scientists were termed “heretics” by the Church and were executed. The Renaissance Period, of which the Republic of Florence and Leonardo da Vinci are central, gave rise to art and through it, promotion of scientific discoveries, inventions and rediscoveries.

In the ancient Indian sub-continent (most of the times attributed to the Indus Valley Civilization), the Vedas and Upavedas, and later the Upanishads promoted the culture of scientific and logical discourse. Proverb such as Vaade Vaade Jaayate Tatwabodha (वादे वादे जायते तत्वबोध:), i.e. knowledge is gained through debates is alone sufficient to understand the importance of discourses in order to discover the truth of the world. The knowledge however came under the control of few people on the administration for centuries. The lack of effective dissemination of the ancient wisdom has created a lot of problems in the sub-continent.

Scientific discoveries have made things possible that were treated only as imagination in the past. The discovery of sea-routes brought people closer, the invention of aeroplane reduced the time for the journeys between different parts of the world, the invention of telegraph and telephone changed the way messages were shared. On the basic principles of navigation, aerodynamics and telecommunication, the humanity has moved from the Age of Cultivation to Age of Global Communication.

Not just that, humanity has also given up the instant submission to fate. In the Dark Age, Black Plague killed thousands of people in Europe. Venice, because of the lack of burial grounds, suffered the most. Instead of contemplating that the disease was spreading through the canals, they believed they were suffering the wrath of God and their loss was God’s will. In the modern age, humans do not readily submit to Faith when they encounter diseases. They investigate the disease, their causes and work on the vaccines and inoculation.

As students of Geology, a branch of science, we have gained some fundamental knowledge about the Earth and how it works during the four-year B.Sc. programme. We have learnt to observe the rocks and soils, to ask what they are and why they are there. We have familiarized ourselves with the Earth processes and the benefits and the problems they bring. We have studied about natural hazards and some ways to mitigate them. We can strive to learn more and publicize what we know. We can make the world a better place.

There is no doubt that the Earthquake of 2072 B.S. (2015) gave rise to a mass awareness about how that particular earthquake occurred. Some people used to say, with much politicisation, “There are two plates: Indian and Chinese. The Indian plate moves to the North to encroach the Chinese plate. Nepal is in middle. That was why the earthquake occurred.”

While I myself tried to remove politics whenever I could, there is a mass of people who believe the above statement to be true. They are right that Nepal lies in between two plates. But most of them are not aware what “plate” really is and that the Earth’s lithosphere is made of a number of plates. As a student of Geology, I feel that we have a lot to do to make the public aware of what the plates are and how they are formed.

We, ourselves however should be ready to face skepticism. Science is not a belief system. Whenever scientists come across hypotheses and theories, they first question, “Is it true? What are the evidences?” A hypothesis can become a major theory if evidences support it. The theory of Plate Tectonics is a common example. If the evidences from submarine navigation and Paleomagnetic studies had not been available, the theory would still have remained a hypothesis. Similarly, if a new hypothesis can challenge and prove that it is stronger than an existing theory, the existing theory, even if popular, will be discarded.

Many people put a blame upon science for the problems we’ve been facing. Sure, guns and bombs have been developed by science and are being used to inflict terrors. Nuclear weapons have threatened the existence of our dear home itself. The knowledge of making explosives and harnessing nuclear energy was not bad itself. Gunpowder and dynamite were used in construction works, and nuclear energy has become an important source of energy in many nations. That’s why I firmly believe that it’s not science that is faulty. The fault is on our crooked desire of using knowledge that we have.

In short, as a student of science, I appeal to everyone to gain right knowledge from the nature, from each other and from what our ancestors have passed on to us. I urge everyone to deliver the knowledge to the public and to the generations to come. Because only with the right knowledge, we the make the world a better place.

[The above article was intended to be the editorial for GEOWORLD Students’ Magazine, Vol. 8, 2017. It was heavily cut in the magazine for the sake of relevance and space]

Monthly Feature 10: A Movie that Took me Back to Astronomy

For the monthly feature this October, I can’t avoid writing about this science fiction movie that involves a worm hole, a black hole, and a crew of scientists trying to save the human species: Interstellar.

I watched the movie twice during the second week this September. The first time I watched it, I did not understand some of the things shown towards the end. The search took me to different answers. It also took me back to astrophysics.

I have always been attracted by astronomy. I enjoyed reading about stars, planets, satellites, asteroids, and comets. I was introduced to complex objects like black hole through a picture book (published by National Geographic Society, I think) my friend had brought to school. About three years ago, I had read Stephen Hawking’s A Brief History of Time. It had given me a picture of the universe but I was still not satisfied.

I had heard about Interstellar from my friends in college. I did not know what the movie showed until I watched it for the first time. To keep the suspense (which I don’t usually do in case of movies) I had not even googled its name. After I watched it the first time, I was confused. Because:

I was touched by its drama.

I did not understand anything shown in the end.

I had to know where Cooper went after trying to enter the black hole. I had to know how all things shown in the movie were related.

As soon as I watched the movie, I googled and saw a term “tesseract”. Cooper had gone into the tesseract. How? “They” had sent him. Who’s they?

Who’s they?

Cooper asks the question twice in the movie. If you have watched the movie and listened carefully the conversation between Cooper and TARS in the Tesseract scene you can get the hint. But who built the Tesseract? Only one answer in Quora satisfied me. And to verify it again, I had to watch the movie.

However, I wanted more information on the scientific accuracy of the movie. While sci-fi movies are related to science, they use their artistic freedom to show things which can be misleading. According to the materials I found on the internet, the movie had shown almost accurately the black hole and the worm hole. I thought, ‘There is some science in the movie.’ I found an ebook The Science of Interstellar, written by astrophysicist Kip Thorne. This book helped me know many aspects of the movie and the science used in it. Combined with my undergraduate physics book I could understand relativity and concepts of space-time better than I had before.

Interstellar helped me widen my knowledge on universe. However, it would have been difficult if I had not known some of the concepts previously. I really appreciate the movies which tease my brain and my knowledge. This is one such movie.

Cast

(Source: Wikipedia)

IMDb Rating: 8.6/10

Understanding Hazard, Risk, Vulnerability and Disaster- Through Football!

Last week I took a class of Engineering Geology (finally getting into something practically useful in the beginning of fourth year). I will give brief definitions and examples of the terms used. Then before you get bored, I will get into a funny way to remember the technical terms using football (soccer).

Prior to that class, I thought hazard and disaster were the same. However, technically, they are different. Let’s take a look at the definitions I studied.

Hazard: Probability of occurrence of an event or phenomenon which can damage lives and properties.

Disaster: The actual occurrence of a dangerous phenomenon which damages lives and property.

When seismologists say, “Nepal lies in a seismically active zone,” they are talking about the probable damages an earthquake can cause (hazard). When they talk about the damage caused by the earthquake in Nepal last year, they are saying something about disaster the earthquake brought up.

Let us also look at two more terms- risk and vulnerability.

Risk: The consequences in terms of “potential losses” for some particular cause, time and place. Specific risk is the product of hazard and vulnerability (Johnson and Degraff, 1988).

Vulnerability: The degree of risk a community is at due to various factors. For example, poor designing and construction of a house makes it vulnerable for a disaster and people living in it are at risk.

I am done with the definitions. Let’s use football- in particular, a famous footballer to understand the above defined terms. The footballer is (as you might already have realized) Eden Hazard.

E. Hazard is a hazard to his opponent team because he has the capacity to score a goal although he may not score in every match. In this match we are talking of, Hazard attacked several times but did not succeed. E. Hazard remained a hazard until 88th minute.

In the eighty-ninth minute of the match, when no goal has not yet occurred, E. Hazard gets a pass from his teammate and he dribbles ahead. His skill allows him to get through the defenders of opposition team. Their defence which had been vulnerable by previous attacks, is now exposed and is at a greater risk (due to the combined effects of Hazard and vulnerability) Hazard shoots and when the opponent goalkeeper cannot save the goal. Hazard has brought a disaster to his opposition. A draw would have made the opposition the league winner. But Hazard’s goal changes the equation. The other team is damaged psychologically.

Reduce Risk! Save Lives!!

Zika Viral Infection- What is it?

As I was scrolling down the Facebook page on my phone, I came across a news on Image Khabar, which shocked me. It said that the World Health Organization (WHO) had warned the Americans not to conceive children. I also saw something new- Zika virus. (I first thought Jika because the news is in Nepali!) I immediately googled to get some information on it.

History
The Zika virus was first discovered in the rhesus monkeys in the year 1947 in the Zika forest of Uganda. The monkey in which the virus was discovered had suffered from mild fever. The first reported case in humans was in 1952 from Uganda and Tanzania. Since then, the disease was believed to be a mild one but the WHO now classifies it as an “emerging” disease. Recent outbreaks have occurred at French Polynesia (2013) and Brazil (2015).

Mode of Transmission
The disease transmits through the vector Aedes aegyptii, the mosquito also responsible for dengue. Recently, it has also been found to have transmitted sexually.

Symptoms
According to the WHO, the symptoms are similar to that of Dengue. Mild fever, rashes on the skin, conjunctivitis, headache lasting for 2-7 days are the major symptoms. In children, microcephaly occurs hampering the mental growth. The virus can be detected on blood culture.

Treatment
There is no vaccines or medicines developed for the treatment of the disease. Paracetamol can be used for the symptoms above.

Warnings
The WHO has warned that the disease might spread fast in the USA and in the peripheral nations. It has also warned of pregnancy during the outbreak of the disease.

Conclusion
Adaptation and evolution of the vector and the virus is spreading a “new” disease as an epidemic every year. Last year, it was Ebola, this year it is Zika. There might be another outbreak next year. The WHO and the media should be active to spread information about the recent outbreaks. Had the WHO not warned the USA, no one would have known about the disease. This situation should be changed. There should be an immediate breaking news once an outbreak is known. Preventive measures should be taken before the disease turns into an epidemic.

References
1. www.who.int/mediacentre/factsheets/zika/en/
2. https://en.m.wikipedia.org/wiki/Zika_virus
3. mobile.nytimes.com/2016/01/26/health/two-cases-suggest-zika-virus-could-be-spread-through-sex.html

Nepal Earthquake: The Geologists’ Role

Saturday, (April 25, 2015) Baishakh 12, 2072 B.S.

A date that will be remember forever by the people of Nepal. On this darkest Saturday, at 11:56 a.m., an earthquake of 7.6 local magnitude struck Barpak of Gorkha. The shocks were felt as far as Kanya Kumari, India in the south, Bangladesh in the east and Pakistan in the west. The earthquake affected districts mostly in the Hilly Region. About 10,000 people died. The destruction of properties and cultural heritages was huge but compared to what was previously imagined, Kathmandu was not affected much. Within a month, the capital city regained its economic activities.

Geologists had been warning of such a disaster for long. Unfortunately, the government did not give utmost importance to the matter, nor did the people think much about it. The earthquake of 1990 in Udaypur had affected the eastern region and the people there remembered the loss of lives and properties it had brought. The earthquake of Taplejung four years ago had shaken Kathmandu Valley as well, but neither the government nor the people had been careful in designing and constructing earthquake-resistant structures. A few Geologists saying from the background that there could be much bigger loss of lives and properties were unheard of. It was also a weakness in their part. I would never have known this had I not been a Geology student myself and by the time I knew, it had already been late. The disaster had already struck.

One month since the major shock, the Seismologists, who have branched off from mainstream Geologists, gave information to the public on earthquake like never before. People immediately caught up words like ‘plates’, ‘tectonics’, ‘faults’ and many other geological terms. It made me happy and sad at the same time. Happy in the sense had basic geology had become household terms (plates, for example) and sad in the sense that it did not happen prior to the earthquake. But, as i discovered later, the people gave credit to the newspapers and magazines as the source of this information. The Geologists of Nepal had failed again. They had been too late.

A problem I see with scientific researches worldwide is that they are complex and totally illogical to the common people. Scientific terms come up here and there, which off course cannot be ignored, but can be made simple through adequate explanations. Journals have always been vague and common people just ignore them. I think they should be able to understand them, interpret and use in their daily lives. Why not publish scientific works that include public interests in two bases- one for the academicians and the other for public? If such a system had existed, I believe that science could be much useful to people. I think the Geologists of Nepal would have got the credit they deserved.

As explorers of a mountainous country, Nepalese Geologists have a lot many works to do on floods, landslides, avalanches, glaciers and so on. And there are people who still ask, “What’s the scope?” I have nothing to say to them, literally!

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