KNOW WHAT DOES "AM" AND "PM" MEAN IN TIME !!

Some countries, including the US, Canada, and Australia, use the 12-hour clock format including AM and PM. What do these abbreviations mean? We will discuss the meaning of AM and PM in this article.

AM stands for Ante Meridiam whereas PM stands for Post Meridiam. This is because the 24 hours of the day are divided into two periods- AM which means before midday and PM means after midday and each period comprises of 12 hours in number.

Hence, the term AM & PM is associated with the time-period: AM, is an abbreviation of the Latin phrase ante merīdiem meaning “before midday”; PM is an abbreviation of post merīdiem, meaning—“after midday.”

This rule gets a bit confusing when you take a look at 12PM and 12AM respectively. For example, 12AM - or ante meridiem - does not make logical sense when you look at the rule because it does not actually come after midnight. 

Therefore, it is always better to refer to 12PM as noon and 12AM as midnight respectively even if analog and digital clocks do label them as the former.

A 24-hour clock, sometimes referred to as military time, states the time according to the number of hours that have passed since midnight. Starting at midnight, hours are numbered from 0 to 24, removing the need for designations like am and pm. For example, at 23:00, 23 hours have passed since the beginning of the current day.

KNOW SCHOOL BUSES ARE ALWAYS PAINTED YELLOW !!

You must have noticed that every school bus has its school name written on it and is painted with yellow colour. Colors not only add to the aesthetic appeal of things, but they also make our lives much easier in many ways.In this article we will discuss the reason behind the yellow colour for School Bus.

Yellow (and the yellow family of colors) gets your attention faster than any other color. People notice yellow objects first.Even when you are looking straight ahead, you can see a yellow object that is not in front of you "in the corners of your eyes" much sooner than any other color even red. Scientists describe this as follows: "Lateral peripheral vision for detecting yellows is 1.24 times greater than for red."This means that as compared to the rest of the colours, yellow has 1.24 times more attraction and also more visibility. The yellow colour of the school bus is also known as the National School Bus chrome yellow.

If there’s fog or any kind of bad weather, drivers will still be able to see yellow cars and any moving vehicle fairly well.Not only are school buses yellow, but also many earth-moving, road-building and other outdoor machines are yellow because you could get hurt if you accidentally run into one of them. Many accidents occur in farms and outdoors because the victim saw the moving object too late. If it’s yellow, you have a strong warning!

This is why the school bus is painted with yellow so that the possibility of accidents on the highway will be less and children can reach their home safely.
Did you know that in the early 1930s, in the US, it was confirmed that there is more attraction in yellow colour than any other colours. That is why some signalling boards are painted with yellow colour.

KNOW WHY CAPTCHA IS USED !!

CAPTCHA is abbreviated as “Completely Automated Public Turing test to tell Computers and Humans Apart”. CAPTCHA is basically a program that can tell whether its user is a human or a computer. They are colorful images with distorted text at the bottom of Web registration forms in many web application development websites. It was coined in 2000 by professors and scientists from Carnegie Mellon University and IBM.

Which purposes does CAPTCHA serve?

CAPTCHA prevents spam in website comment sections and on blogs. Many spammers bombard comment sections with links to increase search engine rankings. The test makes sure only humans comment and users don’t have to sign in beforehand to leave a comment.

It offers protection from scrapers who want to copy the email addresses of users. Spammers would crawl the Internet for email addresses that are posted in clear text. By utilising CAPTCHA you can protect against these scrapers. People need to solve a CAPTCHA before an email address is shown.

Importance of CAPTCHA:

1. Using CAPTCHA you can protect your website or blogs from comment spams, as bloggers receive more than 100 spam comments each day. You can seek help of web development companies to implement this.

2. It is essential that mainly free services should be protected with a CAPTCHA in order to prevent abuse by automated programs.

3. CAPTCHA also avoids dictionary attacks. These are the type of attacks under which an automatically generated scripts or computer program tries random passwords on login forms in case on unsuccessful login.

4. It helps search engines to prevent crawling the spam contents that may be harmful for keeping database safe or sensitive data of being exploited.