What if everyone on the earth jumped at once?

First let’s talk the effect. When all of us collectively jump at once( a 30cm maybe), we will be able to push our planet Earth, 1/100 of the width of a single hydrogen atom. Is that a big deal? Well.. No, tried our best though;)

For any rotating body, if the mass shifts towards the center, the rate of rotation increases. In this case, the rotating body is our planet Earth and the mass we are talking about, is us.

As the Earth rotates faster, we loose “Time”:(. Powerful earthquakes can redistribute mass. The earthquake in Japan in 2011 moved so much mass toward Earth’s center that every day since then we run 0.0000018 seconds shorter. Thankfully, that’s too short.

So, this clearly explain that our puny little mass( together at one place) cannot effect the rotation of our Planet, but this may cause Earth Quakes.



Technology is growing rapidly every decade and we humans are experiencing the essence of technology in almost every walk of our lives.

Marvin Minsky- “Will robots inherit the earth? Yes, but they will be our children”

Every field of technology has a tremendous leap. Briefly transhumanism is nothing but humans working with technology hand in hand. Even now we are so dependent on technology that, we have already started using wearable tech, where we wear tech. Scientists have recently recorded a memory (specifically the memory recorded  was “drinking water”) from a mouse and were successful in planting that particular memory again into the mouse.

In near future we might be able to upload our brain and even download some thoughts. Telepathy may be possible by tracking the brain ways. The Nano bots might be working from the inside of our body to detect deceases. And the Nano clothing which doesn’t need any wash or cleaning. We have already seen the artificial body parts being build. Researchers are working on creation a human eye and the body parts working according to the thoughts in the brain. May be we humans into super humans with the advancements in Artificial Intelligence.

Recently we have seen the “ Back to the future day” October 21 2015, the movie which was released in 1989 and predicted the advancements for 2015. Which gives us a push and reminds us how fast we are expected to advance in the field of science and technology.

This is one way terrifying and one was exciting isn’t it?


what’s a leap second?

The time it takes for earth to rotate around the sun actually isn’t consistent, it differs few fractions of seconds. This is the reason why we add leap seconds once in a while. Recently on june 30th 2015 we added a new second.

Time keeping!!

So, we created the time. We can’t actually sense time with our senses. Learn more about the nature of time right here Nature of time. So, Before we talk about time keeping which is so long indeed, let’s quickly see

Since ages we humans are trying to make time more and more accurate. So let’s get to the history, in 3500BCE Egyptians started measuring time using sun. By placing a tall stick or something, which casts shadow in a particular place according to the suns position. But this isn’t accurate because this doesn’t work on a cloudy day and this changes the durations according to the season change.

So, to overcome this problem “Mechanical clocks” were built. As the time is calculated based on a relative change, these clocks also work on the same principle “Measuring time using a repeated process”. The first in that kind were Water clocks, which measure time according to the volume of water dropped at a constant rate in a marked container. And these mechanical clocks became sophisticated and we started using notched wheels for the constant movement but there was a problem in regulating the speed of the wheel. Now here come the concept of Pendulum. Galileo in 1600 studied the motion of a pendulum, which states that no matter what the mass of the pendulum is, it makes back and forth motion rate constant depending on the length of the pendulum. And this concept was used to build a pendulum clock.

These pendulum clocks were great, but these clocks were a problem to the sailors who often were on the moving ships. To solve this problem John Harrison invented a pocket clock which works on a spring mechanism.

After a long gap, in 1960 Quartz clocks were invented. Quartz crystal is a Peizo electric material, which gives out electricity by applying pressure and vice versa. Learn more about working of Quartz watches on my previous post How a Quartz watch works?. It changes only 15 seconds per month which is pretty much accurate than the precious clocks.

But we need still more accuracy, we depend on time more and more these days, for example the stock market.

For still more accuracy we invented Atomic clocks. Previously a second =1/32,000,000 of an year according to the rotation of the Earth. Scientists felt that, even this is not accurate, the rotation of the earth in its orbit also varies every year due to many factors like moon.

So, to get the most accurate time, the second was defined based on the INTRINSIC property of CESIUM. In these atomic clocks the Cesium is used to tune the waves to a specific frequency. Which has 9,192,631,770 Hz frequency when ever the clock hits that number it counts one SECOND..

For still more accuracy scientists invented Optical clocks which will not show even a second difference for 13 billion years!!!

So let me know your feed back…