Pages

Showing posts with label astronomy. Show all posts
Showing posts with label astronomy. Show all posts

Saturday, 6 October 2012

Is there anything named dimension?

 Is there anything named dimension?

There may be many dimensions.0,1,2,3,4...etc(according to current ideas).What ever it is,let us contradict higher and lower dimensions exists.now it is a true statement,such that it is a truth.Now let us think what might be its use?what was or is or will be its advantage? and why does it doesn't show really and provided a chance for our brains to think?(only true when our concept of dimension is true)

Do the higher dimensions( what we consider) have a high ability to show theory of conservation? or can it include the most complex structure and processes of universe? or is it which controls the uniqueness of elements and conditionally makes their conversion.Or are they highly unstable but productive?

Reasons have no bounds,but you can share your ideas.

Friday, 6 July 2012

How to create a refractive telescope at home



How can you built your own telescope?

What you need is simple,but what you have to be is Be patient.

needed materials:

- a pvc pipe: 50mm diameter of 40cm length
- a pvc pipe: 40(38)mm diameter of 25cm length
- a pvc joiner of 50*40 mm
- a pvc socket of 50mm diameter
- a pvc socket of 40(38)mm diameter
- an objective,convex lens of focal length 50 cm (power=2.0 dioptre)
- an eye piece ,convcex lens of focal length 5cm (power=20.0 dioptre)
- candle,lighter,cloth material and some other essentialities which you prefer.


How to create:

Attach lens of focal length 5cm to the centre of pvc socket of 40(38)mm
Attach lens of focal length 50cm to the centre of pvc socket of 50mm
By heating expand the 40mm mouth of pvc joiner a little.
Pass the 40mm pvc pipe through it.
attach the 50mm mouth of joiner to 50cm pvc
attach 50mm socket (with lens already attached) to the other end of 50cm pvc.
attach 40mm socket (with lens already attached) to the other end of 40cm pvc.
the telescope is redy.
now look a distant object through eyepiece(40mm lens side) and move the 40cm pvc to and pro.
grind it at the position where the image is perfectly seen.

Image formed:

image will be inverted.
image maynot be clear.
objective lens bring the image nearer and eyepiece lens magnifies to it.

The demerits of this telescope:

the price of lens of 5cm focal length is nearly Rs 225 (approx -$4.5).
you must need the service of an optical specialist to attach lens to socket.
This is not a perfect magnified telecope,you can only see it  10x sharper.


This is a 10x powerful telescope.
The image formed will be inverted (but it is not a problem in the case of celestial bodies)
For real image,you have to use a reflecting telescope,in which concave and convex mirrors are used.
(i will explain how a relecting telescope will work in my next post).

The power of a telescope lies in the power of lens.
focal length of eyepiece divided by focal lenth of objective (here 50cm*5cm= 10x)
But while crating with other lens,the length of pvc pipes must be adjusted.
Total length of telescope is equal to the sum of focal lengths of both lens

Monday, 4 June 2012

How to create your own theodolite from home?

It is very much interesting to observe distant objects,it is more
important to remember where and how to see it later.so we have to know
its location.we cannot tell about a star,like near my house or my
school etc..a little knowledge of trigonometry ad geometry can make us
master in it.
Here iam going to discuss about creating a THEODOLITE which has a
major use among sky observers,in astronoimy to locate and mark the
position of celestial bodies.so the construction begins: needed objects:
1.2cd's
2.one 50 cm pipe
3.color pens,pencils,markers
4.cardboard
5.small stick
6.drawing pins/safety pins


Lets work on it.1st take the 2 disks and with the help of a
protractor/pro circle mark 0-360 degrees on both Cd's,better try to be
maximum accurate.use appropriate pen or pencil or marker,we need not
want the markings to erase,means use a permanent marker.now take a
small sheet of card board or wood,place one of the disk's on it and
glue it firmly.now place a stick on the center of disk which can
rotate,glue it wisely.now attach the 2nd disk laterally,perpendicular
to the 1st disk,on the stick.(better to pin it using a nail
pin),extend the pin through the center of the 2nd disk.attach the
small pipe to its end,so that it too rotates.The theodolite is ready.
I had explained in the most condensed way,easily for each youngsters
can understand,but may lack many things.
remember,once you got the idea,modify the instrument with the way you
want.(for example: creating a stand for the apparatus,replacing the 50 cm small pipe with a telescope etc...)
marking of North,East,West and south will make your observations more
easier to mark and study,a permanent space to install the apparatus in
your room or near the windows or upstairs would help you for a long term research.