How does a Search engine work

Each time you enter a word 

or phrase say,“the five best desserts”) into a search engine, the following things happen behind the scenes in about one eighth of a second ...

Step 1 : Search 

The search engine uses algorithms (mathematical formulas) to determine exactly what you’re hunti ng for, adding in synonyms ("tastiest treats”), anticipating your terms before you’ve even finished typing, and offering corrections in case you’ve made a mistake (did you mean “best deserts” instead of “ best desserts”?). 

Step 2: Sort 

Your request is sent to the search engine's b  servers. Here,the company that owns the on  search engine maintains a massive index of an the words, photos, videos, songs, and other data strewn across the World Wide Web. This information-enough to full hundreds of millions of gigabytes--is continuously collected and updated by programs called “spiders” that crawl across the Web and sift through its information 

Step 3: Collect 

From its index, the search engine gathers every Web page with content that matches your search term. Results are filtered based on hundreds of factors, including the pages’ age, the number of people who’ve visited the pages, their  estimated reliability, and more. 

Step 4: Voilà!

The results are ranked as links in your 

Web browser, with the most relevant Web pages at the top of the list. 

How big is the World Wide Web

According to Google, the World Wide Web is made of more than 60 trillion idividual pages---more pages than the number of neurons in your brain. 

Do search engine really search the entire Internet

No. The lntemet encompasses 

much more than just the World Wide Web the linked pages people typically surf and the portion plumbed by search engines. File-sharing sites, corporate data banks. government 'intranets’ workplace servers. and other private sites are strictty oft-limits to public snooping. And then there's the murky region known as "dark net." Uncharted by search engines, it’s the lnternet’s seedy 

underbelly. home to anonymous users and secret networks that want to stay that way. 

Person of interest

WHO? 

Ralph Baer 

WHAT is he famous for? 

Inventing video games 

WHEN? 

l960s through today 

WHERE? 

United States 

WHY is he important? 

Love playing with your PlayStation? Its origins go back to l966, when electrical engineer Ralph Baer invented what would become the Magnavox Odyssey, the first video game system. Despite its simple graphics and bleeping sound effects, the Odyssey established all the features of modern game systems: It hooked to your TV, used a handheld controller, and played a variety of games.

 

 #Something new-

https://prabhnew.blogspot.com/2020/05/why-was-internet-invented_14.html