Miss you so much

Noise Cancelling Headphones

Noise cancelling headphones are amazing as they eliminate the painful noise generated by manmade machinery such as air planes, trains and noises from vehicles etc. Noise is sound wave which does not make sense to human mind and human mind refuse the sound. This effect is perfectly personal. In order to reduce the prolong effects from sound waves generated by machinery.

In order to reduce the noise, two types of noise cancelling techniques are used

1. passive noise cancelling

2. active noise cancelling

In passive noise cancelling technique a large thick cushion seals each ear to prevent entering sound waves into ear canal. Ear plugs, Ear muffs are some examples for passive noise cancelling.  Often the generated noise from the manmade machinery is less than 1000Hz and these types of low frequencies cannot be eliminated by a thick layer of cushion. The most promising active noise cancelling comes into the role to provide must better noise cancelling.

In active noise cancelling, microphones pick the background noise and an inverted wave was generated to cancel out the noise. This technology is not cheap. These types of devices can cost up to 300-400$s while passive noise cancelling devices will cost around 30-40$s. 

My A/L (high school) Teachers

Who Hell Are You to Reject My Paper

Life Is The Ultimate Test We Often Fail

We often think the life style of others and we often try to imitate others by looking at their lives to persuade our goals. Each of us is different. Each of us lives in a totally different environment. A tiny incident which causes a problem for one might not be a problem for another at all. 

But the most importance thing in life is to live happily and reach your goals. Your goal is not identical to the goal any other person. That is because we all have our own imaginations. Those imaginations will limit the life time achievements. 

So never think somebody is having an ideal life which you dream everyday and the most importance thing is to fathom out our goals. 

PhD Student vs PhD Supervisor