The Physics of Running explained – PhysicsWorld Video

The Physics World explains the Physics of running through this simple narrative video.

 

Nanotechnology in Ancient India (!)

Did you know that the Ancient Indian Acharyas applied Nanotechnology too!

 

Concept of reduction in particle size of metals is explained as well as practiced from the time of Charaka. The methods are explained in Charaka Samhita (1500 BC)

The different Bhasmas prepared in Ayurveda are actually utilizing the applications of nanosized metals like iron, calcium, zinc, gold etc. Bhasmas are biologically produced nanoparticles.

Nanoparticles are produced industrially now in big amounts for various purposes including medicine. But the ancient technology which provided an economical way of creating nanosized particles used for curing various ailments are really commendable.

read more

 

Nanotechnology in Ancient India (!)

Did you know that the Ancient Indian Acharyas applied Nanotechnology too!

 

Concept of reduction in particle size of metals is explained as well as practiced from the time of Charaka. The methods are explained in Charaka Samhita (1500 BC)

The different Bhasmas prepared in Ayurveda are actually utilizing the applications of nanosized metals like iron, calcium, zinc, gold etc. Bhasmas are biologically produced nanoparticles.

Nanoparticles are produced industrially now in big amounts for various purposes including medicine. But the ancient technology which provided an economical way of creating nanosized particles used for curing various ailments are really commendable.

read more

 

Cyclotron Animation

A cyclotron is device by which positively charged particle can be accelerated and the desired nuclear reaction can be brought about.

Principle

A positively charged particle can be accelerated to high energy with the help of an oscillating electric field, by making it cross the same electric field time and again with the use of a strong magnetic field.

Construction

It consists of two dees or D-shaped metal chambers D1 and D2. The dees are separated by a small distance. The two dees are perpendicular to their plane. P is the position where the ion source is placed.

The dees are maintained to a potential difference whose polarity alternates with the same frequency as the circular motion of the particles. The dees are closed in a steel box placed between the poles of a strong electromagnet. The magnetic field is perpendicular to the plane of the dees.

See Animation

 

Light Glossary

additive color
A primary light color—red, blue, or green; these three colors produce white light when
added together.
angle of incidence
The angle between a wave striking a barrier and the line perpendicular to the surface.
angle of reflection
The angle between a reflected wave and the normal to the barrier from which it is reflected.
angstrom
An angstrom is 1/100,000,000 of a centimeter.
concave lens
A lens that is thinner in the middle than at the edges; used to correct nearsightedness.
convex lens
A lens that is thicker in the middle than at the edges; used to correct farsightedness.
diffraction grating
A piece of transparent or reflecting material, which contains many thousands of parallel
lines per centimeter; used to produce a light spectrum by diffraction.
electromagnetic wave
A wave that does not have to travel through matter in order to transfer energy.
electromagnetic spectrum
Transverse radiant energy waves, ranging from low frequency to very high frequency,
which can travel at the speed of light.
element
A substance that cannot be broken down into simpler substances by ordinary means.
equalateral triangle
A triangle with three equal angles of 60 degrees and sides of equal length.
filter
A screen that allows only certain colors to pass through it; a transparent material that
separates colors of light.
focal length
The distance between the principal focus of a lens or mirror and its optical center.

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