We have already discussed the various lasers. Let us summarize the active medium and pumping source used in these lasers
For Ruby laser:
Active medium: Aluminum oxide doped with .05% of chromium ions
Pumping source: Optical pumping that is pumping with the help of xenon flash tube.
Output wavelength: 6943 angstroms Continue reading
You must have seen that astronauts wear spacesuits when they land on moon.
Do you know the reason? The reason is that moon has no atmosphere. Exactly, I should say it has negligible atmosphere. Let us discuss. As the gravitational force of moon is 1/6th on the gravitational force on earth. The escape velocity of gases or air molecules on earth is greater than the moon. Continue reading
Posted in Gases
The persons who are interested to be updated about the latest science and technology news. There are many online websites which provide information about the current research. These websites provide information through press releases. Continue reading
In my one of earlier articles on Newton’s law, I have discussed about the Newton’s second law. We all are also aware about the Newton’s first law which mainly states that if an object is at rest will remain at rest and if it is in uniform motion will remain in uniform motion until and unless some external force is applied on it. Continue reading
Do you want to be a scientist or an engineer? If you are opting for science stream and wondering what will you do after completing your plus two class. In India, most of the students of the non medical stream, after plus two pursue engineering because there is no shortage of engineering colleges in India or outside India. They may not get admission in the best or next best college but surely they will get admission in an engineering college. As we are discussing about science and engineering, let us first discuss the meaning of these two: Continue reading
Today we proudly announce the First WinnerScience Innovative Idea Contest- 2015 (WIIC-2015).
The objective of the WIIC is to encourage the students to solve the daily life problems with easy and innovative methods. The aim of the contest is to get the idea from your side, the idea may be in the idea form only or it may be in the practical form also. The proposal should focus on to solve the problems and it may be related to any field of science. Continue reading
For most of us, the assumption is that, the professional science degrees gain a lot of levee than pure science subjects. Pure streams are rarely a first choice. Students prefer engineering and medical than physics, chemistry, maths and biology. They assume that the pay and job security is much higher than studying a pure science course. But the truth is far from it. The fact that as a pure science student you get an opportunity to be a part of a bigger crowd – of educators, researchers, developers, innovators etc. These jobs is much more diverse, secure and rewarding than any other job. The best part is, that you can do all of this side by side, as professor you can be a researcher, a developer and many more. If you choose to be an educator, you get an opportunity to witness transition and evolution first hand. So if you are one of those who love the finer things of life, and would want a career as a future professor – Pure Sciences is definitely a way to go. Continue reading
We have already discussed the difference between distance and displacement. Let us today discuss the difference between displacement and angular displacement. We will also discuss the difference between velocity and angular velocity. Continue reading
Students often asked me what is the difference between force and torque? We might be aware about these terms that is force and torque. Let us understand the concept of force. Force according to a layman is an effort to change the state of a body from rest to motion or from motion to rest and it may also defined as an effort which tries to change the state but it may not change the state. For example, there may be heavy stone and we can try to change its state of rest but we may not be possible to do the same. Continue reading
We all are aware about the concept of force, if not then force may be defined as any push or pull that can change the state of rest of an object or can change the velocity of the moving object or can change the direction of the object. Forces can be classified into two types: conservative and non conservative forces. To understand the concept of these two, we also must be aware about the concept of work. The work is said to be done when a body actually moves a distance along the direction of the force. Now let us discuss the difference between the conservative and non conservative force: Continue reading