THE MAGIC OF NATURE THE MAGIC OF NATURE OUR WONDER DOES GROW THE SECRETS OF NATURE ARE NOT FOR THE HUMANS TO KNOW THE MAGIC OF NATURE IS FOR ALL TO SEE IT IS ALL AROUND YOU AND ALL AROUND ME THE BEUTIFUL SCENIC VIEW EVERYTHING SEEMS AWESOME AND NEW LOOKING AT THE AWESOME SIGHT YOU FEEL SO TRANQUIL AND DELIGHT THINK HOW THE LUSH FORESTS ALWAYS REMAIN GREEN THINK WHY THE WATER DOESN’T ACCOMPLISH THINK HOW THE NORTHERN LIGHTS ESTABLISH THINK FROM WHERE DO WE GET NATURAL THINGS WE GET ALL THESE FROM THE NATURE AND THOSE ARE POSSIBLE FOR NATURE’S MAGIC! THE NATURAL BEAUTY OF NATURE HAS SO MUCH TO SAY, THE BEAUTIFUL CROSSROADS AND LONG WAY, THE NATURE HAS ITS CHARM, KEEP IT SAFE AND DO NOT HARM, THE NATURE WILL KEEP US UNSAFE, IF WE DON'T KEEP IT SAFE! - SAFALYA PAL
PINHOLE CAMERA
The pinhole camera is based on the principle that light travels in a straight line.
Construction of a Pinhole Camera-
To construct a pinhole camera follow the steps described below -
- Take a small box like a shoebox.
- Paint the box entirely in black to light-proof it
- Appropriately determine the distance between the film of plastic or ground glass and light source and make a circular pinhole on the bottom of the box
- Make a shutter by cutting a piece of thick black chart paper.
- Use sturdy duct tape to hold the shutter in place
- Use a light adhesive to control the shutter flap and light entering the box
- Make a viewfinder out of cardboard.
Pinhole Camera Image Characteristics-
- A real image is obtained as the image is obtained on the screen.
- The size of the image obtained is comparatively smaller than the actual object.
- The image is inverted on the x-axis as well as on the y-axis.
- The image can be used in the analysis of the rectilinear propagation of the light.
Uses of a Pinhole Camera-
- The image formed by a pinhole camera may be projected onto a translucent screen for a real-time viewing or safe observation of the solar eclipse.
- A common use of pinhole photography is to capture the movement of the sun over a long period of time.
- Pinhole cameras are sometimes used for surveillance because they are difficult to detect.
Frequently Asked Questions-
What is the use of a pinhole camera?
A pinhole camera is used for capturing the movement of the sun for a long period of time. This is also known as solargraphy.
Who invented the pinhole camera?
Ibn al-Haytham invented the pinhole camera. He was an Arab scholar who studied the pinhole camera for the first time and used the camera to demonstrate how light can be used for the projection of an image onto a flat surface.
What happens when the size of the hole in a pinhole camera is made bigger?
When the size of the hole in a pinhole camera is made bigger, then the sharpness of the image obtained decreases. Also, the image becomes thick and blurry. This is because as the size of the hole increases, the amount of light entering the box increases disturbing the formation of the image.
What type of image is formed in a pinhole camera?
The image formed in a pinhole camera is real, inverted, and small.
How big should a pinhole be?
For obtaining a well-focused image, the diameter of the pinhole should be 0.236 mm.
What are the advantages of a pinhole camera?
The advantages of a pinhole camera are:
- Simple construction
- Easy usage
- They have infinite depth
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