This Psychologist researched & conducted some very famous Chess experiments!!!

Adrianus Dingeman (Adriaan) de Groot (Santpoort, 26 October 1914 – Schiermonnikoog, 14 August 2006) was a Dutch chess master and psychologist, who conducted some of the most famous chess experiments of all time in the 1940s-60. In 1946 he wrote his thesis Het denken van den schaker, which in 1965 was translated into English and published as Thought and choice in chess. De Groot played for the Netherlands in the Chess Olympiads of 1937 and 1939.

The studies involve participants of all chess backgrounds, from amateurs to masters. They investigate the cognitive requirements and the thought processes involved in moving a chess piece. The participants were usually required to solve a given chess problem correctly under the supervision of an experimenter and represent their thought-processes vocally so that they could be recorded.

De Groot found that much of what is important in choosing a move occurs during the first few seconds of exposure to a new position. Four stages in the task of choosing the next move were noted. The first stage was the 'orientation phase', in which the subject assessed the situation and determined a very general idea of what to do next. The second stage, the 'exploration phase' was manifested by looking at some branches of the game tree. The third stage, or 'investigation phase' resulted in the subject choosing a probable best move. Finally, in the fourth stage, the 'proof phase', saw the subject confirming with him/herself that the results of the investigation were valid.

De Groot concurred with Alfred Binet that visual memory and visual perception are important attributors and that problem-solving ability is of paramount importance. Memory is particularly important, according to de Groot (1965) in that there are no ‘new’ moves in chess and so those from personal experience or from the experience of others can be committed to memory.

• Thought and choice in chess (1965).
• Saint Nicholas, A psychoanalytic study of his history and myth (1965).
• Methodology. Foundations of inference and research in the behavioral sciences (1969).
• Perception and memory in chess: Heuristics of the professional eye (1996; with Fernand Gobet and Riekent Jongman).

Chess is a two-player strategy board game played on a chessboard, a checkered gameboard with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide in homes, parks, clubs, online, by correspondence, and in tournaments.

Each player begins the game with 16 pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. Each of the six piece types moves differently. Pieces are used to attack and capture the opponent's pieces, with the objective to 'checkmate' the opponent's king by placing it under an inescapable threat of capture. In addition to checkmate, the game can be won by the voluntary resignation of the opponent, which typically occurs when too much material is lost, or if checkmate appears unavoidable. A game may also result in a draw in several ways, where neither player wins. The course of the game is divided into three phases: opening, middlegame, and endgame.

Chess is believed to have originated in Eastern India, c. 280 – 550 CE, in the Gupta Empire, where its early form in the 6th century was known as chaturaṅga (Sanskrit: चतुरङ्गक्रीडा), literally four divisions [of the military] – infantry, cavalry, elephants, and chariotry, represented by the pieces that would evolve into the modern pawn, knight, bishop, and rook, respectively. The earliest evidence of chess is found in the neighboring Sassanid Persia around 600, where the game came to be known by the name chatrang. Chatrang is evoked in three epic romances written in Pahlavi (Middle Persian). 

Chatrang was taken up by the Muslim world after the Islamic conquest of Persia (633–44), where it was then named shatranj, with the pieces largely retaining their Persian names. In Spanish "shatranj" was rendered as ajedrez ("al-shatranj"), in Portuguese as xadrez, and in Greek as ζατρίκιον (zatrikion, which comes directly from the Persian chatrang), but in the rest of Europe it was replaced by versions of the Persian shāh ("king"), which was familiar as an exclamation and became the English words "check" and "chess". Murray theorized that Muslim traders came to European seaports with ornamental chess kings as curios before they brought the game of chess.

The game reached Western Europe and Russia by at least three routes, the earliest being in the 9th century. By the year 1000 it had spread throughout Europe. Introduced into the Iberian Peninsula by the Moors in the 10th century, it was described in a famous 13th-century manuscript covering shatranj, backgammon, and dice named the Libro de los juegos. Another theory contends that chess arose from the game xiangqi (Chinese chess) or one of its predecessors, although this has been contested.

This Flautist Physician invented Stethoscope inspired while observing children playing with long, hollow sticks in the days !!!

René-Théophile-Hyacinthe Laennec (17 February 1781 – 13 August 1826) was a French physician. He invented the stethoscope in 1816, while working at the Hôpital Necker and pioneered its use in diagnosing various chest conditions. He died of tuberculosis in 1826. He was born in Quimper (Brittany). His mother died of tuberculosis when he was five or six, and he went to live with his grand-uncle the AbbéLaennec (a priest). At the age of twelve he proceeded to Nantes where his uncle, Guillaime-François Laennec, worked in the faculty of medicine at the university. 

Laennec was a gifted student, he learned English and German, and began his medical studies under his uncle's direction. His father (a lawyer) later discouraged him from continuing as a doctor and René then had a period of time where he took long walks in the country, danced, studied Greek and wrote poetry. However, in 1799 he returned to study. Laennec studied medicine in Paris under several famous physicians, including Dupuytren and Jean-Nicolas Corvisart-Desmarets. There he was trained to use sound as a diagnostic aid. He was noted as a very kind man and his charity to the poor became proverbial.

Laennec wrote the classic treatise De l'Auscultation Médiate, published in August 1819. The preface reads:

In 1816, I was consulted by a young woman laboring under general symptoms of diseased heart, and in whose case percussion and the application of the hand were of little avail on account of the great degree of fatness. The other method just mentioned [direct auscultation] being rendered inadmissible by the age and sex of the patient, I happened to recollect a simple and well-known fact in acoustics, ... the great distinctness with which we hear the scratch of a pin at one end of a piece of wood on applying our ear to the other. 

Immediately, on this suggestion, I rolled a quire of paper into a kind of cylinder and applied one end of it to the region of the heart and the other to my ear, and was not a little surprised and pleased to find that I could thereby perceive the action of the heart in a manner much more clear and distinct than I had ever been able to do by the immediate application of my ear.

Laennec had discovered that the new stethoscope was superior to the normally used method of placing the ear over the chest, particularly if the patient was overweight. Laennec is said to have seen schoolchildren playing with long, hollow sticks in the days leading up to his innovation. The children held their ear to one end of the stick while the opposite end was scratched with a pin, the stick transmitted and amplified the scratch. He built his first instrument as a 25 cm by 2.5 cm hollow wooden cylinder, which he later refined to comprise three detachable parts. 

His clinical work allowed him to follow chest patients from bedside to the autopsy table. He was therefore able to correlate sounds captured by his new instruments with specific pathological changes in the chest, in effect pioneering a new non-invasive diagnostic tool. 

Laennec was the first to classify and discuss the termsrales, rhonchi, crepitance, and egophony – terms that doctors now use on a daily basis during physical exams and diagnoses. In February 1818, he presented his findings in a talk at the Academie de Medecin, later publishing his findings in 1819. Laennec coined the phrase mediate auscultation (indirect listening), as opposed to the popular practice at the time of directly placing the ear on the chest (immediate auscultation). 

He named his instrument the stethoscope, from stethos (chest), and skopos (examination). Laennec often referred to the stethoscope as "the cylinder," and as he neared death only a few years later, he bequeathed his own stethoscope to his nephew, referring to it as "the greatest legacy of my life." The modern binaural stethoscope with two ear pieces was invented in 1851 by Arthur Leared. George Cammann perfected the design of the instrument for commercial production in 1852, which has become the standard ever since.

Laennec developed the understanding of peritonitis and cirrhosis. Although the disease of cirrhosis was known, Laennec gave cirrhosis its name, using the Greek word (kirrhos, tawny) that referred to the tawny, yellow nodules characteristic of the disease. He coined the term melanoma and described metastases of melanoma to the lungs. In 1804, while still a medical student, he was the first person to lecture on melanoma. This lecture was subsequently published in 1805. 

Laennec actually used the term 'melanose,' which he derived from the Greek (mela, melan) for "black." Over the years, there were bitter exchanges between Laennec and Dupuytren, the latter objecting that there was no mention of his work in this area and his role in its discovery.

He also studied tuberculosis. Laennec advocated objective scientific observation. Professor Benjamin Ward Richardson stated in Disciples of Aesculapius that "the true student of medicine reads Laennec's treatise on mediate auscultation and the use of the stethoscope once in two years at least as long as he is in practice. It ranks with the original work of Vesalius, Harvey and Hippocrates."

The stethoscope is an acoustic medical device for auscultation, or listening to the internal sounds of an animal or human body. It is often used to listen to lung and heart sounds. It is also used to listen to intestines and blood flow in arteries and veins. In combination with a sphygmomanometer, it is commonly used for measurements of blood pressure. Less commonly, "mechanic's stethoscopes" are used to listen to internal sounds made by machines, such as diagnosing a malfunctioning automobile engine by listening to the sounds of its internal parts. 

Stethoscopes can also be used to check scientific vacuum chambers for leaks, and for various other small-scale acoustic monitoring tasks. A stethoscope that intensifies auscultatory sounds is called phonendoscope.

The medical historian Jacalyn Duffin has argued that the invention of the stethoscope marked a major step in the redefinition of disease from being a bundle of symptoms, to the current sense of a disease as a problem with an anatomical system even if there are no noticeable symptoms. This re-conceptualiization occurred in part, Duffin argues, because prior to the stethoscopes, there were no non-lethal instruments for exploring internal anatomy

Acoustic Stethoscope, Electronic stethoscope, Recording Stethoscope, Fetal Stethoscope and Doppler Stethoscope were the other Stethoscopes which are developed over the period of time with advancement and evolution.

Not only did he pioneer "India's space programme", but also set up world class education & research facilities!!!

Dr. Sarabhai emphasized the importance of a space programme in his quote:

"There are some who question the relevance of space activities in a developing nation. To us, there is no ambiguity of purpose. We do not have the fantasy of competing with the economically advanced nations in the exploration of the moon or the planets or manned space-flight.""But we are convinced that if we are to play a meaningful role nationally, and in the community of nations, we must be second to none in the application of advanced technologies to the real problems of man and society."

Vikram Ambalal Sarabhai (12 August 1919 – 30 December 1971) was an Indian physicist. He is considered the father of India's space programme. Dr.Vikram Sarabhai was born on 12 August 1919 in the city of Ahmedabad, in Gujarat state in western India. His father Ambalal Sarabhai was an affluent industrialist and owned many textiles mills in Gujarat. Vikram Sarabhai was one of the eight children of Ambalal and Sarla Devi.

Sarabhai matriculated from the Gujarat College in Ahmedabad after passing the Intermediate Science examination. After that, he moved to England and joined the St. John's College, University of Cambridge. He received the Tripos in Natural Sciences from Cambridge in 1940. In September, 1942, Vikram Sarabhai married Mrinalini Sarabhai, a celebrated classical dancer. The wedding was held in Chennai without anyone from Vikram's side of the family attending the wedding ceremony because of the ongoing Quit India movement led by Mahatma Gandhi. His daughter Mallika Sarabhai was awarded the Padma Bhushan, India's third highest civilian honour for the year 2010 and his son Kartikeya Sarabhai was awarded the Padma Shri in 2012. Sarabhai returned to an independent India in 1947. 

Looking at the needs of the country, he persuaded charitable trusts controlled by his family and friends to endow a research institution near his home in Ahmedabad. This led to the creation of the Physical Research Laboratory in Ahmedabad on November 11, 1947. The establishment of the Indian Space Research Organization (ISRO) was one of his greatest achievements. He successfully convinced the government of the importance of a space programme for a developing country like India after the Russian Sputnik launch. 

Dr. Homi Jehangir Bhabha, widely regarded as the father of India's nuclear science program, supported Dr. Sarabhai in setting up the first rocket launching station in India. This center was established at Thumba near Thiruvananthapuram on the coast of the Arabian Sea, primarily because of its proximity to the equator. After a remarkable effort in setting up the infrastructure, personnel, communication links, and launch pads, the inaugural flight was launched on November 21, 1963 with a sodium vapour payload.

As a result of Dr. Sarabhai's dialogue with NASA in 1966, the Satellite Instructional Television Experiment (SITE) was launched during July 1975 – July 1976 (when Dr.Sarabhai was no more). Dr. Sarabhai started a project for the fabrication and launch of an Indian satellite. As a result, the first Indian satellite, Aryabhata, was put in orbit in 1975 from a Russian Cosmodrome. 

Dr. Sarabhai was very interested in science education and founded a Community Science Centre at Ahmedabad in 1966. Today, the centre is called the Vikram A Sarabhai Community Science Centre. He led the Sarabhai family's diverse business conglomerate. His interests varied from science to sports to statistics. He set up Operations Research Group (ORG), the first market research organization in the country Sarabhai established many institutes which are of international repute. 

Most notable among them are the Nehru Foundation for Development in Ahmedabad, Indian Institute of Management Ahmedabad (IIMA), which is considered a world class management institute. Also, he helped establish the Physical Research Laboratory (PRL), which is doing a commendable job in R&D in physics. Sarabhai set up Ahmedabad Textiles Industrial Research Association (ATIRA), which helped the booming textiles business in Ahmedabad. He also set up the Center for Environmental Planning and Technology (CEPT). 

Not stopping with all these, he went ahead and set up the Blind Men Association(BMA) which helps visually-challenged people with the necessary skills and support. Along with his wife Mrinalini Sarabhai, he founded the Darpana Academy of Performing Arts. Other well-known institutions established by him include the Faster Breeder Test Reactor (FBTR) in Kalpakkam, Variable Energy Cyclotron Project in Calcutta, Electronics Corporation of India Limited (ECIL) in Hyderabad and Uranium Corporation of India Limited (UCIL) in Jaduguda, Jharkhand.

From suffering with bone disease, getting a 'c' on his idea, to making it world's largest courier company; he flew a long way!!!

Frederick Wallace "Fred" Smith (born August 11, 1944), is the founder, chairman, president, and CEO of FedEx, originally known as Federal Express, the first overnight express delivery company in the world, and the largest in the world. The company is headquartered in Memphis, Tennessee. Smith was crippled by bone disease as a small boy but regained his health by age 10, before becoming an excellent football player and learning to fly at 15. Smith had a great interest in flying, and became an amateur pilot as a teen. He attended elementary school at Presbyterian Day School and high school at Memphis University School.

In 1962, Smith entered Yale University. While attending Yale, he wrote a paper for an economics class, outlining overnight delivery service in a computer information age. Folklore suggests that he received a C for this paper, although in a later interview he claims that he told a reporter, "I don't know what grade, probably made my usual C", while other tales suggest that his professor told him that, in order for him to get a C, the idea had to be feasible. The paper became the idea of FedEx (for years, the sample package displayed in the company's print advertisements featured a return address at Yale). In his college years, he was a friend and DKE fraternity brother of George W. Bush. Smith was also friends with John Kerry and shared an enthusiasm for aviation with Kerry and was a flying partner with him.

In 1970, Smith purchased the controlling interest in an aircraft maintenance company, Ark Aviation Sales, and by 1971 turned its focus to trading used jets. On June 18, 1971, Smith founded Federal Express with his $4 million inheritance (approximately $23 million in 2013 dollars), and raised $91 million (approximately $525 million in 2013 dollars) in venture capital. In 1973, the company began offering service to 25 cities, and it began with small packages and documents and a fleet of 14 Falcon 20 (DA-20) jets. His focus was on developing an integrated air-ground system, which had never been done before. Smith developed FedEx on the business idea of a shipment version of a bank clearing house where one bank clearing house was located in the middle of the representative banks and all their representatives would be sent to the central location to exchange materials.

In the early days of FedEx, Smith had to go to great lengths to keep the company afloat. In one instance, he took the company's last $5,000 to Las Vegas and won $27,000 gambling on blackjack to cover the company's $24,000 fuel bill. 

Smith has served on the boards of several large public companies, the St. Jude Children's Research Hospital and Mayo Foundation boards. He was formerly chairman of the Board of Governors for the International Air Transport Association and the U.S. Air Transport Association. Smith is chair of the Business Roundtable's Security Task Force, and a member of the Business Council and the Cato Institute. He served as chairman of the U.S.-China Business Council and is the current chairman of the French-American Business Council. In addition, Smith was named 2006 Person of the Year by the French-American Chamber of Commerce. He is a member of the Aviation Hall of Fame. 

Smith was named as Chief Executive magazine's 2004 "CEO of the Year" and the 2008 Kellogg Award for Distinguished Leadership, presented by the Kellogg School of Management on May 29, 2008. He was also awarded the 2008 Bower Award for Business Leadership from The Franklin Institute in Philadelphia, Pennsylvania. He is the 2011 recipient of the Tony Jannus Award for distinguished contributions to commercial aviation. In March 2014, Fortune Magazine ranked him 26th among the list of "World's 50 Greatest Leaders"

In 2000, Smith made an appearance as himself in the Tom Hanks movie Cast Away, when Tom's character is welcomed back, which was filmed on location at FedEx's home facilities in Memphis, Tennessee.

FedEx Corporation is an American global courier delivery services company headquartered in Memphis, Tennessee. The name "FedEx" is a syllabic abbreviation of the name of the company's original air division, Federal Express, which was used from 1973 until 2000.The firm was named by Fortune magazine as one of the top 100 companies to work for in 2013, citing the company's choice to downsize with voluntary buyouts rather than involuntary layoffs.

Happy International Biodiesel Day!!!

Transesterification of a vegetable oil was conducted as early as 1853 by E. Duffy and J. Patrick, four decades before the first diesel enginebecame functional. Rudolf Diesel's prime model, a single 10 ft (3 m) iron cylinder with a flywheel at its base, ran on its own power for the first time in Augsburg, Germany, on 10 August 1893 running on nothing but peanut oil. In remembrance of this event, 10 August has been declared "International Biodiesel Day".

It is often reported that Diesel designed his engine to run on peanut oil, but this is not the case. Diesel stated in his published papers, "at the Paris Exhibition in 1900 (Exposition Universelle) there was shown by the Otto Company a small Diesel engine, which, at the request of the French government ran on arachide (earth-nut or pea-nut) oil (see biodiesel), and worked so smoothly that only a few people were aware of it. 

The engine was constructed for using mineral oil, and was then worked on vegetable oil without any alterations being made. The French Government at the time thought of testing the applicability to power production of the Arachide, or earth-nut, which grows in considerable quantities in their African colonies, and can easily be cultivated there." 

Diesel himself later conducted related tests and appeared supportive of the idea. In a 1912 speech Diesel said, "the use of vegetable oils for engine fuels may seem insignificant today but such oils may become, in the course of time, as important as petroleum and the coal-tar products of the present time."

Although, petroleum based fuels were widely used during those days, the demand for vegetable oil or animal fats based diesel oils were really high. Records have shown that during the 1920s and 1930s countries like Italy, France, United Kingdom, Portugal, Germany, Argentina, Japan, Brazil and China had tested and used animal fat or vegetable oil based diesel oils which is presently known as biodiesel. 

However, due to some scientific reasons those oils were no longer used. Also, these oils were poorly efficient as compared to normal petroleum based diesel oils. Thus as a tribute to our environment every year this day many NGOs and local organizations around the world conduct various activities that are beneficial for the environment.

Biodiesel refers to a vegetable oil - or animal fat-based diesel fuel consisting of long-chain alkyl (methyl, ethyl, or propyl) esters. It is typically made by chemically reacting lipids (e.g., vegetable oil, animal fat) with an alcohol producing fatty acid esters. It is meant to be used in standard diesel engines and is thus distinct from the vegetable and waste oils used to fuel converted diesel engines. Biodiesel can be used alone, or blended with petrodiesel in any proportions. Biodiesel can also be used as a low carbon alternative to heating oil.