What is the expecting shape of the wavefront when light emerging out of a convex lens ?

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Welcome to this new concept, so here in this concept you come to know 'about what is the shape of wavefront when light emerging out of a convex lens'.

So let's come to our topic !!!

When light emerging out of a convex lens than the shape of the wavefront is plane.

Explanation : When a point source placed at the focus of a convex lens, than whatever rays emerging or come out from the lens is in parallel form.

So that, the wavefront is a plane wavefront.

Here in the given above image you can see very clearly, how these rays emerging in a parallel form in a plane wavefront.

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What is the expecting shape of the wavefront when light diverging from a point source ?

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Welcome to this new concept.

So here in this concept you come to know about, what is the shape of the wavefront, when light diverging from a point source.

So let's come to our topic !!!

When light diverging from a point source than the shape of the wavefront is spherical in shape.

As you can see in the given image, you can easily understand that, how these light diverging from a  point source in spherical wavefront shape.

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What are the main characteristics of the wave normal !!!

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Welcome to this concept, so here in this concept you come to know about the main characteristics of the wave normal in easy and simple way.

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i) The wave normal gives the direction of propagation of wave.

Explanation : As you can see in the above given image than you can easily understand that how wave normal help to give direction to the propagation of wave.

Let's take an one example, the medium through which wave is propagated, for an example 'air' so the wave is move in the direction of air simply.

Actually medium or we can say channel gives the direction for propagation of wave.

So it means that, the wave normal work according to the medium through which is allow to propagate.

ii) The wave normal is perpendicular to the wavefront.

Explanation : As you can see in the given image, the wave normal is perpendicular to the wavefront.

It means that, the wave normal make an angle with wavefront is 90° Degree.

iii) In a homogeneous isotropic medium, the wave normal is same as direction of ray of light.

Explanation : In a homogeneous isotropic medium or channel, the wave normal is same as direction of light.

It means that , First of all we have to know that, what is homogeneous ?

Homogeneous : Homogeneous is a uniform structure.

Isotropic material : The isotropic material whose properties remains same when tested in different different directions.

When we allow to propagate wave normal in the Homogeneous isotropic medium then the direction of the wave normal is in the direction of ray of light.

iv) Wave normal is drawn from the point of generation of wavefront.

Explanation : Actually the wave normal is start from the point where wavefront is generated.

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State the different types of wavefront with suitable examples !!!

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Welcome to this concept, so in this concept you come to know the different types of wavefronts with examples.

So let's explore this concept !!!

The wavefront is three types,

i) Spherical wavefront

ii) Plane wavefront

iii) Cylindrical wavefront

So let's know about this different wavefronts with an examples !!!

i) Spherical wavefront : The wavefront which is originating from a point source of light at some finite distance is called as or known as 'spherical wavefronts'

The example of this spherical wavefronts is : The candle flame, which we use in our day to day life in the moments such as birthday, marriage anniversary, or when electricity cut off.

The candle flame glow in the form of spherical wavefront.

ii) Plane wavefront : The wavefronts which is originating from a point source of light at infinite distance is called as or known as 'plane wavefront'.

The example of this plane wavefront is : The light from the sun arrives at the surface of the earth in the form of plane wavefront.

iii) Cylindrical wavefront : The wavefront which is originating from the linear source or slit of light at some finite distance is called as or known as 'cylindrical wavefront'.

The example of this cylindrical wavefront is : When a tube light is glow, it glow in the form of 'cylindrical wavefront'.

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National science day celebrated in the remembrance of physicist C.V Raman !!!

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Welcome to this new concept, so here in this concept you come to know the most interesting information regarding to the National science day.

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So first of all we know, why this National Science Day celebrated ?

The national science day celebrated is in the remembrance of our physicist or great scientist Chandrasekhara Venkata Raman.

Physicist C.V Raman : The great scientist physicist is an Indian scientist, he is well know by his work in the field of scattering of light.

For his discovery Sir Chandrasekhar venkata Raman was awarded the Nobel prize in physics in 1930.

History of The National Science Day

The National Council of Science and technology Communication (NCSTC) asked for permission to the Government of India for designate February 28 as National Science Day.

In the remembrance of great scientist physicist Chandrasekhar Venkata Raman for his great work so this event celebrated now all over Indian school, colleges, universities, scientific, technical, medical, and other research institutions.

What are the aim of celebrating National Science Day ?

The National Science Day celebrated to spread the message about the significant of science in our day to day life.

The National Science Day celebrated in the remembrance of great welfare contributed by science field in the life of human being to make life easier and comfortable this is all due to science field.

The theme of National Science Day 2021

So this year gives the theme on the celebration of National Science Day.

The aim of this year 2021 to encourage and inspire students towards in the field of science.

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Know complete kepler's laws of planetary motion in simple and easily | By scientechplus

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Welcome to this new concept, so here in this concept you will come to know about all kepler's law of planetary motion.

So let's start to know the concept,

So first of all we know that the kepler's first law,

The Kepler's first law planetary motion : The kepler's first law state that, the orbit of a planet is an ellipse with the sun at one of the foci or focus.

For understanding this kepler's law of planetary motion, first of all we need to know about, what is ellipse ?

So if we talk about ellipse than this ellipse have two foci or we can say two focus point.

This foci is same measure from the centre of the ellipse.

The longer foci diameter is known as or called as 'major axis'.

And the smaller foci diameter is known as or called as 'minor axis'.

So as like that, at one foci the sun is situated and rest of all planet revolve around the sun in elliptical orbit motion.

The second law of kepler's planetary motion : The second kepler's law state that, the line joining the planet and the sun sweeps equal areas in equal interval of time.

The planet which moving from point A to point B and the planet which move from point C to point D, according as you can see in the above given image, so if we calculate both cover area by the planet is same in equal interval of time.

So let's say if we consider, the planet cover 10 metre square in 2 minutes than so in the coming 2 minutes the planet will also cover only 10 metre square area.

I mean to say that, the planet cover equal area in equal interval of time not equal distance.

So this is only possible because of according to the kepler's suggested statement on, "A planet moves faster when it is closer to the sun and the planet moves slowly when it is farther from the sun".

So you have one question arises in your mind that, how it is possible when planet come closer to the sun it moves faster and when it farther from the sun it become slow ?

So the answer is : It is only because of gravitational pull.

When as planet arrives closer to the sun the gravitation pull become more and when the planet farther from the sun the gravitational pull become less.

The third law of kepler's planetary motion : The kepler's third law state that, the square of it's period of revolution around the sun is directly proportional to the cube of the mean distance of a planet from the sun.

The planet as much as time take to revolve around the sun, so square of that time and this is equal to the cube of it's semi major axis.

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Define about wavefront, wave normal and wave surface in simply and easily | By scientechplus

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Welcome to this concept, so here in this concept you come to know the definition about wave front, wave normal and wave surface.

So let's define first of all 'wavefront'

i) Wavefront:- The locus of all the points of the medium to which waves reach simultaneously so that all the points are in the same phase or we can say all the points in same state of vibration is called as or known as 'wavefront'.

And the second is 'Wave normal'

ii) Wave normal:- A perpendicular line drawn to the surface of  a wavefront at any point of the wavefront in the direction of propagation towards light waves is called as or known as 'wave normal'.

And the last third is 'Wave surface'

iii) Wave surface:- The surface of a sphere with light source as centre and distance travelled by light waves as radius where each waves reach simultaneously is called as or known as 'wave surface'.

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 When we see at night in sea or in ocean the level of water goes up and in day time, the level of water goes down !!! Why it is happen ???

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Welcome to this concept, here in this concept you come to know the most interesting and  exciting concept, which delights your mood at high level.

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Let's explore this concept in simply and easily !!!

In during holiday's when we go to picnic at beaches or spending some lovely moment at seashore.

Or you have experience this great moment when you go for camp in seashore side.

When we go for camp, we have to spend some days, isn't it ?

So in these camp days, we got to experience both day and night.

Have you observed any changes happening in the sea in day and night ???

If you observed and changes happening in sea during day and night ? Than please tell us in the comments box !!!

So let's know what actually happen during day and night time in sea.

You are very familiar with high tide and low tides that occur regularly in the sea , isn't it ?

The level of sea water goes up means that, it is called as high tide and the level of sea water is goes down it means, it is called as low tide.

It means clearly that, during night time we see moon, isn't it ?

When the moon come in contact directly with sea water than the level of water goes up.

It is because of moon's gravitational force.

So you know that here very clearly in during day time, the moon not come in contact directly with sea water.

That's why the water level of sea is goes down. It's means that in day time there is no gravitational force act on sea water.

Therefore, the level of sea water is goes down.

Here as you see in the above image, so in this image you very clearly see that low tide and high tide.

Where as in this image, the point (A) and point (B) represent the low tide.

Whereas point (C) and point (D) represent the high tide.

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The position of human heart and it's shape, size, weight, colour and wall of the heart know here in detail in simply !!!

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Welcome to this concept, so here in this concept you come to know the most interesting concept about on human heart.

So what are we waiting for, 

Let's come to our topic !!!

The contraction and relaxation of our heart goes 24×7, isn't ?

If 1/1000 second it will get stop functioning than our health affected badly.

When we sleep in the night, our heart never sleep. It work for whole day and night for us.

Heart is a pumping organ in our body, which continously pump to our blood to send in each and every parts of our body for providing nutrition and collection of waste substances through blood.

The heart is present inside the middle of the thoracic cavity in between two lungs in a cavity is called as or known as mediastinum.

Our heart is not exactly located in the middle or centre, but actually it lies just slanting little to the left side.

Our lovely heart is protected on the cage of ribs, back bone, and breast bone and diaphragm.

 Let's know about our heart, it's origin, shape, size, weight, colour and lastly wall of the heart.

First we know about i) Origin of heart : The origin of human heart means our heart is mesoderm.

ii) The shape of our heart : Actually our heart is in hollow muscular cone shaped organ or we can say in other words, it is in conical shape organ.

iii) The size of our heart : Hey friends you are lucky to predict your size of your heart by your hand fist.

Yes your read correct !!!

You can see your size of your heart by just closing your fingers and see it is your heart size.

This example is approximately rough figure of heart but it is correct !!!

And the figure measurement of our heart is 12cm in length, 9cm in breadth and 6cm in thickness.

iv) The weight of our heart : The weight of our heart or human heart is about 250 to 300 gm.

v) The colour of our heart : We only know very well that our heart is only in dark red colour.

But it's not like that, our heart is reddish brown colour.

vi) The wall of our heart : Our heart has three layers of wall, it is  a) pericardium, b) myocardium, c) endocardium

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