KNOW WHAT DOES "CE" MARK MEAN ON ELECTRONIC DEVICES !

You might see the various marking on electronic devices. One such marking is "CE" marking. Have you ever thought about what does this marking mean? Let's discuss the meaning of this marking in the following article.

What is CE mark?

CE is an abbreviation of the French phrase ‘Conformité Européene’ which literally translates as ‘European Conformity.’ The term initially used was "EC Mark" and it was officially replaced by "CE Marking" in the Directive 93/68/EEC in 1993.

What does this mean?

The CE Marking serves as a declaration from the manufacturer that their product complies with the essential requirements of the relevant European health, safety, and environmental legislation laid out in the different product directives. Once a product has been awarded the CE Marking, then it is able to move freely within the European Free Trade Association (EFTA) and the European Union (EU). CE Marking on a product permits the withdrawal of the non-conforming products by EEA customs and enforcement/vigilance authorities.

Why CE marking is required?

For a company trying to sell a product, getting a CE marking makes things much easier because it means you can sell the product anywhere in the EU. Also, it takes care of any possible hazards caused due to the use of the product. In short we can call it a symbol of quality. Hope, now you understand the meaning of CE written on the electronic device. Thank you for reading the article.

KNOW WHY GLUE DOES NOT STICK TO ITS TUBE !

Glue is known for its instant sticking properties. They develop a strong bond to the area of application. But have you imagined why it does not stick to the container in which it is kept? Let's explore the reason behind this in the following article.

The regular glue is made up of a variety of chemicals called polymers. These polymers are long strands that are either sticky or stretchy. Glue manufacturers have to find just the right combination of sticky and stretchy polymers to make the best glue. Water is used with most of the glues to keep it in the liquid state.

When you put glue on a piece of paper, water is exposed to air. The water eventually evaporates. As the water evaporates, the glue dries and hardens. All that's left are the sticky polymers that hold things together. This process is called mechanical adhesion.

When white glue is inside a bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. Basically, the bottle protects the glue from the air and keeps the glue runny. If you've ever left the top off a glue bottle for a while, you may have noticed that, unfortunately, the glue dried up!

In glues like fevistick, water is not used. Instead of the polymers in fevistick, it contains a chemical called cyanoacrylate. This chemical tightens together when it reacts with water vapor in the air. This process is called chemical adhesion.

So, we saw air plays a major role in the sticking and hardening properties of glue. So now you know why glue does not stick to the container in which it is kept. Thanks for reading the article.

KNOW WHY HOTELS USE WHITE BEDSHEETS !

We generally see white bedsheets in hotels. But have you ever given a thought to why only white colour is used? It gets dirty faster, still, hotel owners prefer to use the white colour, why? Let us answer this question through this article.

The prime reasons for white bedsheets are as follows:

1.) White makes the environment bright: Changing the bedsheets make the entire room bright. Designs and patterns become more visible against white than any other colour.

2.) Standard of cleanliness: White bedsheets are one effective way for hotels to prove their standards of cleanliness. Much like how the wealthy used to wear all white to show that they could afford to keep it clean, hotels use all-white linens to show luxury.

3.) The Colour Psychology: According to colour psychology, white stands for purity and perfection. Imagine a clean room but with red or blue bed linen. Can you be sure of its cleanliness? White gives this assurance.

4.) Maintenance: These bed sheets have to be washed daily. So if it would be any other colour, it would fade out soon. There is no such problem with the white colour. That is the reason why towels are also white in colour.

5.) Easy washing: White colour can be bleached easily. Also, when hotel staff do the washing, they can throw bed linens, towels and any other dirty fabrics into the same washing machine without worrying about any colours running (as they all are white).

Did you enjoy reading this article? Are you curious about any such questions? Leave a comment below and watch this space for more.