Wednesday, 30 November 2016

Science and Technology

What is HTML?

 

HTML is the standard markup language for creating Web pages.
  • HTML stands for Hyper Text Markup Language
  • HTML describes the structure of Web pages using markup
  • HTML elements are the building blocks of HTML pages
  • HTML elements are represented by tags
  • HTML tags label pieces of content such as "heading", "paragraph", "table", and so on
  • Browsers do not display the HTML tags, but use them to render the content of the page

A Simple HTML Document

 <!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>

<h1>My First Heading</h1>
<p>My first paragraph.</p>

</body>

</html>

  •  Example Explained
  • The <!DOCTYPE html> declaration defines this document to be HTML5
  • The <html> element is the root element of an HTML page
  • The <head> element contains meta information about the document
  • The <title> element specifies a title for the document
  • The <body> element contains the visible page content
  • The <h1> element defines a large heading
  • The <p> element defines a paragraph
  • HTML Tags

    HTML tags are element names surrounded by angle brackets:
    <tagname>content goes here...</tagname>

    • HTML tags normally come in pairs like <p> and </p>
    • The first tag in a pair is the start tag, the second tag is the end tag
    • The end tag is written like the start tag, but with a forward slash inserted before the tag name

Technews

Difference Between Fan and Blower 

The fan and blower are two different kind of machine belong to same group. Broth these machines are used to flow a gas or mostly air in a large area but the main difference between fan and blower is that the fan is operate at low pressure while blower is operate at high pressure.
 These machines are used in many industrial machines for air conditioning or cooling purpose.

The fan consist a rotor witch is equipped with some blades. This rotor is rotate by a electric motor or sometimes by a mechanical machine. It is primary used to flow the air into a large space. Mostly fans used to blow the air axially or the direction of the air flow along the axis of the rotor. Fans blow large volume of air with minor change in pressure. It has specific pressure ratio is 1.1.

Blower is different from fan. It is a centrifugal unit which blows the air radially. It consist a impeller equipped with series of blades which are designed to flow air radially. It blow the air or gas with a moderate pressure change. The change in specific pressure ratio is 1.11 to 1.2.

 

Technews

REASON WHY THERE ARE NOT FRONT WHEEL DRIVE MOTORCYCLES 

Why are there no front wheel drive motorcycles?

 

 

It should work in theory, but there are a couple things which would complicate it:


1) As a practical matter, the front wheel needs to steer as well as move up and down on the suspension.  This makes it more difficult to attach a reliable drivetrain to the front wheel, without adding unwanted mass and impeding the action of the front suspension and steering.


2) Traction.  As designed motorcycles apply the driving force at the rear wheel, and the size of the tire is chosen to minimize rear wheel spin. The front tire manages braking forces, since 70-100% of braking force comes from the front tire.  Both tires share the cornering forces.   


If you have driven a front wheel drive car aggressively, you will have noticed understeer, where applying the gas causes the car to push towards the outside of the turn, because the cornering forces plus the driving force exceed the traction limit of the tire, it slides, and the car pushes straight.  On a motorcycle this would cause a lowside crash.

But ignoring this for now:



If you were to drive the front tire, you would need to size it for engine torque, perhaps the size of a standard rear.  This would give heavier steering.  And you'd burn through fronts in half the mileage.



The rear tire, having nothing to do but cornering, could be the size of a standard front tire, or smaller.



Theoretically you could address point 1) with an electric motor, and you could make it safer with traction control.  It wouldn't be as easy, and it wouldn't have better performance, but it would certainly be unique.

Share your views in comment section !!!

Technews

This auto driver has a website, mobile app, 2 TED talks, and over 10k Facebook fans 

32 year-old Annadurai runs his share auto on the Thiruvanmiyur-Sholinganallur route in Chennai. His auto is, however, not the one you find on regular days. Annadurai’s auto has top-notch facilities. Free WiFi, mobile charging point, 40 magazines, 10 newspapers, TV, laptop, and tablets; Annadurai’s ‘Amazing Auto’ has it all.

Annadurai was born in Peravurani, a small town in Thanjavur district. His family shifted to Chennai when he was just four. He has been running his share auto for seven years. “I don’t know why I started adding things to my auto. I just thought I must do something for my customers and stocked around 20 newspapers. But, it wasn’t enough,” Annadurai told The Hindu.
Annadurai gives free rides to all teachers. “Be it doctors, engineers or even the president, they were groomed by teachers and so I respect them,” he told NDTV. He also gives free rides to lovers on Valentine’s Day, mothers with their kids on Mother’s Day, and fathers of Father’s Day. On Children’s Day, school children too enjoy free rides in his auto.
With his own website and a mobile app, Annadurai is very popular. He also has a Facebook page with more than 10,000 followers, and has given two TED talks. Annadurai intends to change the way autos work. "A lot of things have changed today, except for the auto. Most auto rickshaws are the same as they were decades ago and there is no improvement. I want to bring a change in this area," Annadurai told Life Beyond Numbers.


Technews

Check out the Why the Power Of Engines Are Measured In “Horsepower” 

We come across many physical quantities in our day-to-day life. Like we measure the distance in Metre, force in Newton, temperature in Celsius. Generally,
these units are named after the scientists who discovered them or who worked extensively in that particular field. But when it comes to Power, it is measured in “horsepower”. So have you ever wondered why horsepower is used as the measurement of Power?

 






Here’s the reason behind it:

In 1781, James Watt introduced an enhanced steam engine. It saved up to 75% of the fuel when compared to that of the existing Newcomen engine. But at that time a majority of consumers used draft horses for their mechanical needs. In order to explain to people that his engine was more productive than draft horses, Watt came up with a solution. He wanted to bring out a comparison between his engine & draft horses. With a series of experiments, James Watt calculated that a typical draft horse could do nearly 33,000 foot-pound of work (i.e to lift a 33,000-pound weight in 1 foot) in a single minute. Thus, he gave birth to a new unit – horsepower. 
Mathematically horsepower is defined as follows:
1 horsepower = 33,000-foot pounds of work done per minute.
Even though the value of horsepower was not clear, it didn’t stop buyers from buying Watt’s 5 horsepower engine. In simpler words, his engine can do a work approximately equivalent to 5 horses. The term horsepower is still used as a supplementary unit to the output power of turbines, piston engines etc.

Technews




Suppose you say "bake me a cookie."  Well that's easy, a ten-year-old could do it.

Suppose you say "bake me a billion cookies."  All of a sudden, you need

  • Buildings to store the cookies.  (Preferably in several different places, in case one of the buildings gets hit by a hurricane.)
  • Industrial-strength factories to bake the cookies.  Back-end developers to build the machinery and fix it when it breaks.
  • Front-end developers, who build machines that take the cookies served by the factories and package them into neat little boxes that are served to customers.
  • Data scientists to experiment with various recipes and see which ones people like the best.
  • Designers who decide what goes into the recipes.
  • A security team so nobody hacks into the buildings and steals cookies.
  • Quality assurance people who make sure the cookies are safe.
  • A legal team for when people sue you anyway.
  • A marketing team so people want to buy your cookies.
  • Managers to lead all these people and make sure they know what they're doing.  Managers to lead other managers.  Managers to lead those managers, etc.
This Question is on quora.com and answer is given by below author.

About the Author

Jessica Su

CS PhD student at Stanford
Credit: www.quora.com


Saturday, 26 November 2016

Big picture

Foreign TV Shows That Made Our Childhood Awesome

With the advent of colour TV and more channels to choose from, several foreign television shows made their entry into India. With their wit, humor, and vibrance, these shows became popular here as much as they were abroad. Not to mention how wonderful they made our childhood!
Here is the list of a few foreign TV shows we loved watching as children.

1. Small Wonder

 How can we forget the adorable Vicki and the amazing Lawson family? Aired in India in 1994, Small Wonder made all of us, and even our parents, adore this cute robot child.

 

2. I Dream Of Jeannie

 

 With Barbara Eden in her adorable character as the Jeanie, I Dream Of Jeanie was another show in the 90s that stole our hearts.

 

3. The 3 Stooges

 Who can forget Moe, Curly, and Larry’s slapstick sense of humor? The Three Stooges. Absolute laugh riot.

 

4. Silver Spoons

 Who can forget the insanely rich Ricky?

5. Bewitched

 

 

 

 

Bollywood

What Akshay Kumar Did For This Martyr’s Family Will Make You Salute Him!

 

Post the Uri attacks, our Khiladi is doing every single thing he can, for helping the martyrs and their distressed families. For soldiers’ families, who have failed to get any sort of financial help from the government, after losing their loved ones, Akshay Kumar is no less than a Messiah.



Being an army brat himself, the actor has always shown immense respect and love towards Indian Defence Forces.

Technews


Disclaimer: all of this is only a joke :)

Java: USA -- optimistic, powerful, likes to gloss over inconveniences.

C++: UK -- strong and exacting, but not so good at actually finishing things and tends to get overtaken by Java.

Python: The Netherlands. "Hey no problem, let'sh do it guysh!"

Ruby: France. Powerful, stylish and convinced of its own correctness, but somewhat ignored by everyone else.

Assembly language: India. Massive, deep, vitally important but full of problems.

Cobol: Russia. Once very powerful and written with managers in mind; but has ended up losing out.

SQL and PL/SQL: Germany. A solid, reliable workhorse of a language.

Javascript: Italy. Massively influential and loved by everyone, but breaks down easily.

Scala: Hungary. Technically pure and correct, but suffers from an unworkable obsession with grammar that will limit its future success.

C: Norway. Tough and dynamic, but not very exciting.

PHP: Brazil. A lot of beauty springs from it and it flaunts itself a lot, but it's secretly very conservative.

LISP: Iceland. Incredibly clever and well-organised, but icy and remote.

Perl: China. Able to do apparently almost anything, but rather inscrutable.

Swift: Japan. One minute it's nowhere, the next it's everywhere and your mobile phone relies on it.

C#: Switzerland. Beautiful and well thought-out, but expect to pay a lot if you want to get seriously involved.


R: Liechtenstein. Probably really amazing, especially if you're into big numbers, but no-one knows what it actually does.

Awk: North Korea. Stubbornly resists change, and its users appear to be unnaturally fond of it for reasons we can only speculate on.

bollywood

Dear Zindagi Is So Much More Alia Than SRK, and Thank God for That

 

I'm not ashamed to admit that I fell for all the Dear Zindagi hype.

I watched every teaser as soon as it came out, hooked by the soft focus, the fact that the movie was going to revolve around mental health and therapy, its conversational style, and the easy chemistry that seemed apparent between Alia's Kaira and Shah Rukh's Dr. Jehangir.
The movie, when I finally got to watch it, took a while to get to its point. It starts off by setting Kaira up as the perfect, closed-off, complex, heroine—effortlessly pretty, endlessly talented in her chosen craft (cinematography), and so, so, so unlucky in love.

Much of the first half is devoted to this. The movie even goes so far as to give Kunal Kapoor's Raghuvendra the line: "Why are you so complicated?!" as he looks at Kaira with confusion and adoration.

So okay, we get it, she's complicated.

When Dear Zindagi finally makes its point, though, it's a strong one.



The Good

We need more movies to say what this movie is saying—therapy is normal and mental health warrants concern. There is nothing wrong with going to a "dimaag ka doctor".

It also helps that Alia Bhatt has never been better.

This is the actor at the top of her game. The script lets her down in some places, but she soldiers on anyway, bringing a restrained, realistic acting style to her role. Her breakdowns feel real. Her confusion feels honest.

The Bad

Try as it might, the movie couldn't escape Bollywood conventions.

Of course, Kaira had to be flawless. She's selfish and completely self-absorbed, but that's something the movie timidly skips around. She leaves broken hearts in her wake like she was born to do it, treats the men who seem to fall for her by the dozen like they're nothing more than momentary entertainment, but the movie chooses to focus solely on her struggle.