Wednesday, 30 December 2020
YouTube's History and Its Impact on the Internet
Tuesday, 29 December 2020
The history of cakes
Monday, 28 December 2020
About Kalinga War
Sunday, 27 December 2020
Japan, China, the United States and the Road to Pearl Harbor, 1937–41
At the outset, U.S. officials viewed developments in China with ambivalence. On the one hand, they opposed Japanese incursions into northeast China and the rise of Japanese militarism in the area, in part because of their sense of a longstanding friendship with China. On the other hand, most U.S. officials believed that it had no vital interests in China worth going to war over with Japan. Moreover, the domestic conflict between Chinese Nationalists and Communists left U.S. policymakers uncertain of success in aiding such an internally divided nation. As a result, few U.S. officials recommended taking a strong stance prior to 1937, and so the United States did little to help China for fear of provoking Japan. U.S. likelihood of providing aid to China increased after July 7, 1937, when Chinese and Japanese forces clashed on the Marco Polo Bridge near Beijing, throwing the two nations into a full-scale war. As the United States watched Japanese forces sweep down the coast and then into the capital of Nanjing, popular opinion swung firmly in favor of the Chinese. Tensions with Japan rose when the Japanese Army bombed the U.S.S. Panay as it evacuated American citizens from Nanjing, killing three. The U.S. Government, however, continued to avoid conflict and accepted an apology and indemnity from the Japanese. An uneasy truce held between the two nations into 1940.

In 1940 and 1941, President Franklin D. Roosevelt formalized U.S. aid to China. The U.S. Government extended credits to the Chinese Government for the purchase of war supplies, as it slowly began to tighten restrictions on Japan. The United States was the main supplier of the oil, steel, iron, and other commodities needed by the Japanese military as it became bogged down by Chinese resistance but, in January, 1940, Japan abrogated the existing treaty of commerce with the United States. Although this did not lead to an immediate embargo, it meant that the Roosevelt Administration could now restrict the flow of military supplies into Japan and use this as leverage to force Japan to halt its aggression in China.
After January 1940, the United States combined a strategy of increasing aid to China through larger credits and the Lend-Lease program with a gradual move towards an embargo on the trade of all militarily useful items with Japan. The Japanese Government made several decisions during these two years that exacerbated the situation. Unable or unwilling to control the military, Japan’s political leaders sought greater security by establishing the “Greater East Asia Co-Prosperity Sphere” in August, 1940. In so doing they announced Japan’s intention to drive the Western imperialist nations from Asia. However, this Japanese-led project aimed to enhance Japan’s economic and material wealth so that it would not be dependent upon supplies from the West, and not to “liberate” the long-subject peoples of Asia. In fact, Japan would have to launch a campaign of military conquest and rule, and did not intend to pull out of China. At the same time, several pacts with Western nations only made Japan appear more of a threat to the United States. First, Japan signed the Tripartite Pact with Germany and Italy on September 27, 1940 and thereby linked the conflicts in Europe and Asia. This made China a potential ally in the global fight against fascism. Then in mid-1941, Japan signed a Neutrality Pact with the Soviet Union, making it clear that Japan’s military would be moving into Southeast Asia, where the United States had greater interests. A third agreement with Vichy France enabled Japanese forces to move into Indochina and begin their Southern Advance. The United States responded to this growing threat by temporarily halting negotiations with Japanese diplomats, instituting a full embargo on exports to Japan, freezing Japanese assets in U.S. banks, and sending supplies into China along the Burma Road. Although negotiations restarted after the United States increasingly enforced an embargo against Japan, they made little headway. Diplomats in Washington came close to agreements on a couple of occasions, but pro-Chinese sentiments in the United States made it difficult to reach any resolution that would not involve a Japanese withdrawal from China, and such a condition was unacceptable to Japan’s military leaders.
Faced with serious shortages as a result of the embargo, unable to retreat, and convinced that the U.S. officials opposed further negotiations, Japan’s leaders came to the conclusion that they had to act swiftly. For their part, U.S. leaders had not given up on a negotiated settlement, and also doubted that Japan had the military strength to attack the U.S. territory. Therefore they were stunned when the unthinkable happened and Japanese planes bombed the U.S. fleet at Pearl Harbor on December 7, 1941. The following day, the United States declared war on Japan, and it soon entered into a military alliance with China. When Germany stood by its ally and declared war on the United States, the Roosevelt Administration faced war in both Europe and Asia.
Saturday, 26 December 2020
When was smartphone invented?
Friday, 25 December 2020
Rare 'great conjunction' of Jupiter and Saturn wows skywatchers around the world
So, why is this conjunction special?
It’s the alignment. We measure the position of a planet in terms of the angle it makes on the Earth’s orbital plane, with a given reference direction. When we say two planets have aligned in a conjunction, it suggests they are casting the same angle with that reference direction.
In fact, this is almost never the case. Planets in a conjunction are typically above or below each other, because their orbits are slightly tilted with respect to each other.
This time, Jupiter and Saturn are a tenth of a degree apart viewed from Earth. From some views, that might give them the appearance of converging into one, but viewers around the world have found them distinct enough to tell them apart.
Also, the position of Earth matters. Not every alignment provides a clear viewing.
And how rare is this conjunction?
The last Great Conjunction happened in 1623. For context, Galileo had discovered four of Jupiter’s moons with his telescope a few years previously — but scientists today believe Galileo would not have found it easy to see the conjunction, because the planets were aligned too close to the Sun from Earth’s perspective. From an Indian context, Jahangir was ruling the Mughal empire at the time, and the Maratha warrior king Chhatrapati Shivaji was yet to be bor
The last time the two planets were close enough to be viewed in the night sky was in 1226. This was just a year before the death of the Mongol ruler Genghis Khan.
Tuesday, 22 December 2020
How was zoom app invented.
ZOOM APP
In May 2012, the company changed its name to Zoom, influenced by Thacher Hurd's children's book Zoom City In September 2012, Zoom launched a beta version that could host conferences with up to 15 video participants In November 2012, the company signed Stanford University as its first customer. The service was launched in January 2013 after the company raised a $6 million Series A round from Qualcomm Ventures, Yahoo! founder Jerry Yang, WebEx founder Subrah Iyar, and former Cisco SVP and General Counsel Dan Scheinman. Zoom launched version 1.0 of the program allowing the maximum number of participants per conference to be 25. By the end of its first month, Zoom had 400,000 users and by May 2013 it had 1 million users. In July 2013, Zoom established partnerships with B2B collaboration software providers, such as Redbooth (then Teambox), and also created a program named Works with Zoom, which established partnerships with Logitech, Vaddio, and InFocus. In September 2013, the company raised $6.5 million in a Series B round from Horizon Ventures and existing investors. At that time, it had 3 million users. In April 2020, the app's CEO, Eric Yuan, announced Zoom's daily users have ballooned to more than 200 million.
On February 4, 2015, the company received US$30 million in Series C funding from investors including Emergence Capital, Horizons Ventures (Li Ka-Shing), Qualcomm Ventures, Jerry Yang, and Patrick Soon-Shiong. At that time, Zoom had 40 million users, with 65,000 organizations subscribed and a total of 1 billion meeting minutes since it was established. Over the course of 2015 and 2016, the company integrated its software with Slack, Salesforce, and Skype for Business With version 2.5 in October 2015, Zoom increased the maximum number of participants allowed per conference to 50 and later to 1,000 for business customers. In November 2015, former president of RingCentral David Berman was named president of the company, and Peter Gassner, the founder, and CEO of Veeva Systems joined Zoom's board of directors.
In January 2017, the company raised US$100 million in Series D funding from Sequoia Capital at a US$1 billion valuation, making it a so-called unicorn In April 2017, Zoom launched a scalable telehealth product allowing doctors to host remote consultations with patients. In May, Zoom announced integration with Polycom's conferencing systems, enabling features such as multiple screens and device meetings, HD and wireless screen sharing, and calendar integration with Microsoft Outlook, Google Calendar, and iCal. From September 25-27, 2017, Zoom hosted Zoomtopia 2017, its first annual user conference. At this conference, Zoom announced a partnership with Meta to integrate Zoom with augmented reality, integration with Slack and Workplace by Facebook, and first steps towards an artificial intelligence speech recognition program.
♥️♥️♥️
TO BE CONTINUED.......
Monday, 21 December 2020
About Wifi
WIFI
A 1985 ruling by the U.S. Federal Communications Commission released the ISM band for unlicensed use. These frequency bands are the same ones used by equipment such as microwave ovens and are subject to interference.
The technical birthplace of Wi-Fi is The Netherlands. In 1991, NCR Corporation with AT&T Corporation invented the precursor to 802.11, intended for use in cashier systems, under the name WaveLAN. NCR's Vic Hayes, who held the chair of IEEE 802.11 for 10 years, along with Bell Labs Engineer Bruce Tuch, approached IEEE to create a standard and were involved in designing the initial 802.11b and 802.11a standards within the IEEE... They have both been subsequently inducted into the Wi-Fi NOW Hall of Fame. The first version of the 802.11 protocol was released in 1997 and provided up to 2 Mbit/s link speeds. This was updated in 1999 with 802.11b to permit 11 Mbit/s link speeds, and this proved popular.
In 1999, the Wi-Fi Alliance formed as a trade association to hold the Wi-Fi trademark under which most products are sold.
The major commercial breakthrough came with Apple Inc. adopting Wi-Fi for their iBook series of laptops in 1999. It was the first mass consumer product to offer Wi-Fi network connectivity, which was then branded by Apple as AirPort. This was in collaboration with the same group that helped create the standard Vic Hayes, Bruce Tuch, Cees Links, Rich McGinn, and others from Lucent
Wi-Fi uses a large number of patents held by many different organizations in April 2009, 14 technology companies agreed to pay CSIRO $1 billion for infringements on CSIRO patents. This led to Australia labeling Wi-Fi as an Australian invention, though this has been the subject of some controversy. CSIRO won a further $220 million settlement for Wi-Fi patent-infringements in 2012, with global firms in the United States required to pay CSIRO licensing rights estimated at an additional $1 billion in royalties. In 2016, the wireless local area network Test Bed was chosen as Australia's contribution to the exhibition A History of the World in 100 Objects held in the National Museum of Australia.
Etymology and terminology
The name Wi-Fi, commercially used at least as early as August 1999, was coined by the brand-consulting firm Interbrand. The Wi-Fi Alliance had hired Interbrand to create a name that was "a little catchier than 'IEEE 802.11b Direct Sequence'. Phil Belanger, a founding member of the Wi-Fi Alliance, has stated that the term Wi-Fi was chosen from a list of ten potential names invented by Interbrand.
The name Wi-Fi has no further meaning, and was never officially a shortened form of "Wireless Fidelity". Nevertheless, the Wi-Fi Alliance used the advertising slogan "The Standard for Wireless Fidelity" for a short time after the brand name was created, and the Wi-Fi Alliance was also called the "Wireless Fidelity Alliance Inc" in some publications.
Interbrand also created the Wi-Fi logo. The yin-yang Wi-Fi logo indicates the certification of a product for interoperability.
Certification
The IEEE does not test equipment for compliance with its standards. The non-profit Wi-Fi Alliance was formed in 1999 to fill this void—to establish and enforce standards for interoperability and backward compatibility, and to promote wireless local-area-network technology. As of 2017, the Wi-Fi Alliance includes more than 800 companies. It includes 3Com (now owned by HPE/Hewlett-Packard Enterprise), Aironet (now owned by Cisco), Harris Semiconductor (now owned by Intersil), Lucent (now owned by Nokia), Nokia, and Symbol Technologies (now owned by Zebra Technologies). The Wi-Fi Alliance enforces the use of the Wi-Fi brand to technologies based on the IEEE 802.11 standards IEEE. This includes wireless local area network (WLAN) connections, a device to device connectivity (such as Wi-Fi Peer to Peer aka Wi-Fi Direct), Personal area network (PAN), local area network (LAN), and even some limited wide-area network (WAN) connections. Manufacturers with membership in the Wi-Fi Alliance, whose products pass the certification process, gain the right to mark those products with the Wi-Fi logo.
CITYWIDE
In the early 2000s, many cities around the world announced plans to construct citywide Wi-Fi networks. There are many successful examples; in 2004, Mysore (Mysuru) became India's first Wi-Fi-enabled city. A company called WiFiyNet has set up hotspots in Mysore, covering the complete city and a few nearby villages.
In 2005, St. Cloud, Florida, and Sunnyvale, California, became the first cities in the United States to offer citywide free Wi-Fi (from MetroFi). Minneapolis has generated $1.2 million in profit annually for its provider.
In May 2010, the then London mayor Boris Johnson pledged to have London-wide Wi-Fi by 2012. Several boroughs including Westminster and Islington already had extensive outdoor Wi-Fi coverage at that point.
Officials in South Korea's capital Seoul are moving to provide free Internet access at more than 10,000 locations around the city, including outdoor public spaces, major streets, and densely populated residential areas. Seoul will grant leases to KT, LG Telecom, and SK Telecom. The companies will invest $44 million in the project, which was to be completed in 2015.
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AHONA SARKAR...
Sunday, 20 December 2020
who invented whatsapp and why?
Whatsapp is the most used app in 2020 app used in 2020 as it helps to connect with our near and dear ones.
Jan Koum, co-founder and CEO of Facebook’s WhatsApp messaging service says the idea for the company he co-founded with Brian Acton in 2009 came about so he could stop missing calls on his new smartphone.
“It started with me buying an iPhone,” Koum told an audience of several hundred Silicon Valley veterans gathered for an event this week at the Computer History Museum in Mountain View, California. “I got annoyed that I was missing calls when I went to the gym.”
He and Acton then built an app that could let their friends know whether or not they were available, thanks to an easy-to-use feature called “Status.”
“We didn’t set out to build a company. We just wanted to build a product that people used,” Koum said late Wednesday, during an onstage panel discussion that preceded an advance screening of a new documentary called “Silicon Valley: The Untold Story.”
The app didn’t take off right away, even though it was accepted into Apple’s App Store, Koum recounted.
“We were so excited when it launched,” he said. “And so disappointed when no one used it.”
That soon changed, however.
By 2014, WhatsApp, thanks to its easy-to-use interface and uncluttered design, had more than 400 million users globally.
Corporate suitors like Facebook soon came calling.
‘All a blur’
When panel moderator Michael Malone asked Koum what he remembered most about the day he agreed to sell the company in early 2014, Koum drew a blank.
“It was all a blur. I don’t remember any of that except being in a room with lawyers for three days straight,” he said.
Ultimately, Facebook agreed to pay more than $19 billion to acquire WhatsApp, turning both of its founders into billionaires.
Last year Koum and WhatsApp reached 1.3 billion monthly users.
Malone asked him why he still goes to work since it’s like Koum “won the lottery.”
“We still have a lot of people who don’t use our product. We want to convince them,” Koum replied. “We still have problems to solve.”
When asked by CNBC after the panel what it was like since Acton left the company last year, Koum answered,
“We miss Brian.”
Thursday, 17 December 2020
Are there really ghosts?
Are there really ghosts?
If you believe in ghosts, you're not alone. Cultures all around the world believe in spirits that survive death to live in another realm. In fact, ghosts are among the most widely believed paranormal phenomenon: Millions of people are interested in ghosts, and a 2013 Harris Poll found that 43% of Americans believe in ghosts.
The idea that the dead remain with us in spirit is an ancient one, appearing in countless stories, from the Bible to "Macbeth." It even spawned a folklore genre: ghost stories. Belief in ghosts is part of a larger web of related paranormal beliefs, including near-death experiences, life after death, and spirit communication. The belief offers many people comfort — who doesn't want to believe that our beloved but deceased family members aren't looking out for us, or with us in our times of need?
People have tried to (or claimed to) communicate with spirits for ages; in Victorian England, for example, it was fashionable for upper-crust ladies to hold séances in their parlors after tea and crumpets with friends. Ghost clubs dedicated to searching for ghostly evidence formed at prestigious universities, including Cambridge and Oxford, and in 1882 the most prominent organization, the Society for Psychical Research, was established. A woman named Eleanor Sidgwick was an investigator (and later president) of that group and could be considered the original female ghostbuster. In America during the late 1800s, many psychic mediums claimed to speak to the dead — but were later exposed as frauds by skeptical investigators such as Harry Houdini.
It wasn't until recently that ghost hunting became a widespread interest around the world. Much of this is due to the hit Syfy cable TV series "Ghost Hunters," now in its second decade of not finding good evidence for ghosts. The show spawned dozens of spinoffs and imitators, and it's not hard to see why the show is so popular: the premise is that anyone can look for ghosts. The two original stars were ordinary guys (plumbers, in fact) who decided to look for evidence of spirits. Their message: You don't need to be an egghead scientist, or even have any training in science or investigation. All you need is some free time, a dark place, and maybe a few gadgets from an electronics store. If you look long enough any unexplained light or noise might be evidence of ghosts.
The science and logic of ghosts
One difficulty in scientifically evaluating ghosts is that a surprisingly wide variety of phenomena are attributed to ghosts, from a door closing on its own, to missing keys, to a cold area in a hallway, to a vision of a dead relative. When sociologists Dennis and Michele Waskul interviewed ghost experiencers for their 2016 book "Ghostly Encounters: The Hauntings of Everyday Life" (Temple University Press) they found that "many participants were not sure that they had encountered a ghost and remained uncertain that such phenomena were even possible, simply because they did not see something that approximated the conventional image of a 'ghost.' Instead, many of our respondents were simply convinced that they had experienced something uncanny — something inexplicable, extraordinary, mysterious, or eerie." Thus, many people who go on record as claiming to have had a ghostly experience didn't necessarily see anything that most people would recognize as a classic "ghost," and in fact, they may have had completely different experiences whose only common factor is that it could not be readily explained.
DID YOU KNOW??
GHOSTS FORM IN CASE A PERSON CAN RECOGNIZE THAT HE IS GOING TO LEAVE THE EARTH AND HIS MANY DREAMS IS STILL NOT FULFILLED. SO PEOPLE DO Śrāddha.
to be continued.........................
How was refrigerator invented?
HOW WAS REFRIGERATOR INVENTED?
The first cooling system for food involved ice. Artificial refrigeration began in the mid-1750s and developed in the early 1800s. In 1834, the first working vapor-compression refrigeration system was built. The first commercial ice-making machine was invented in 1854. In 1913, refrigerators for home use were invented. In 1923 Frigidaire introduced the first self-contained unit. The introduction of Freon in the 1920s expanded the refrigerator market during the 1930s. Home freezers as separate compartments (larger than necessary just for ice cubes) were introduced in 1940. Frozen foods, previously a luxury item, became commonplace.
Freezer units are used in households as well as in industry and commerce. Commercial refrigerator and freezer units were in use for almost 40 years before the common home models. The freezer-over-refrigerator style had been the basic style since the 1940s until modern, side-by-side refrigerators broke the trend. A vapor compression cycle is used in most household refrigerators, refrigerator-freezers, and freezers. Newer refrigerators may include automatic defrosting, chilled water, and ice from a dispenser in the door.
Domestic refrigerators and freezers for food storage are made in a range of sizes. Among the smallest are Peltier-type refrigerators designed to chill beverages. A large domestic refrigerator stands as tall as a person and maybe about 1 m wide with a capacity of 600 L. Refrigerators and freezers may be free-standing, or built into a kitchen. The refrigerator allows the modern household to keep food fresh for longer than before. Freezers allow people to buy food in bulk and eat it at leisure, and bulk purchases save money.
DID YOU KNOW?
1834. American inventor Jacob Perkins, living in London at the time, built the world's first working vapor-compression refrigeration system, using either in a closed cycle. His prototype system worked and was the first step to modern refrigerators, but it didn't succeed commercially.
Wednesday, 16 December 2020
GLOBAL WARMING
GLOBAL WARNING
IT CAUSES FOR THE HUMAN ACTIVITIES THAT PRODUCES A LOT OF GAS AND CREATES POLLUTION, LIKE...
1) Greenhouse Gases Are the Main Reasons for Global Warming.
2) PRIMARY FOSSIL FUEL BURNING
3) BURNING FIRECRACKERS
4) DRIVING CAR, SCOOTER AND BIKE FOR SHORT DISTANCE JOURNEY
5) Variations in the Sun's Intensity.
6) INDUSTRIAL, AGRICULTURE ACTIVITY
7) DEFORESTATION
WHAT IS GLOBAL WARNING AND IT'S effects?
Global warming, the gradual heating of Earth's surface, oceans, and atmosphere, is caused by human activity, primarily the burning of fossil fuels that pump carbon dioxide (CO2), methane, and other greenhouse gases into the atmosphere. Despite political controversy about climate change, a major report released Sept.
HOW SERIOUS IS GLOBAL WARMING?
Higher temperatures are worsening many types of disasters, including storms, heatwaves, floods, and droughts. A warmer climate creates an atmosphere that can collect, retain, and drop more water, changing weather patterns in such a way that wet areas become wetter and dry areas drier. Global warming causes climate change, which poses a serious threat to life on earth in the forms of widespread flooding and extreme weather.
HOW DID IT START?
Scientists generally regard the later part of the 19th century as the point at which human activity started influencing the climate. But the new study brings that date forward to the 1830s.
NOW, IT IS ALSO SAID THAT GLOBAL WARMING IS GOOD...
HERE'S THE INFORMATION!
Global Warming is important since it helps determine future climate expectations. Through the use of latitude, one can determine the likelihood of snow and hail reaching the surface. You can also be able to identify the thermal energy from the sun that is accessible to a region. It also refers to the sea-level rise caused by the expansion of warmer seas and melting ice sheets and glaciers.
AFTER MANY pieces of research IT IS SAID THAT GLOBAL WARMING IS GOOD AND BAD TOO.
IT IS 99% BAD AND 1 % GOOD.
SO it's BETTER TO CHANGE SOME OF OUR ACTIVITIES THAT WILL SURELY HELP OUR NATURE.
1. Speak up!
2. Power your home with renewable energy.
3. Weatherize, weatherize, weatherize.
4. Invest in energy-efficient appliances.
5. Reduce water waste.
6. Actually eat the food you buy—and make less of it meat.
7. Buy better bulbs.
8. Pull the plug(s).
9. Drive a fuel-efficient vehicle.
10. Maintain your ride.
11. Rethink planes, trains, and automobiles.
12. Shrink your carbon profile.
WHY WE SHOULD STOP GLOBAL WARMING?
Warmer climate increases public health challenges like heat aggravated illnesses, increases in vector-borne diseases, and decreased access to safe water and food. Cutting short-lived climate pollutants can slow the rate of warming and lower public health risks.
I HOPE YOU HAVE FOUND THIS BLOG HELPFUL.
COMING WITH MORE SUCH BLOGS, ON THE WAY!
THANKYOU
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