What is a month ?
The time period between one full moon to the next full moon is slightly longer than 29 days. In many calendars this period is called a month
What are the phases of the moon ?
The various shapes of the bright part of the moon as seen during a month are called phases of the moon
What is an astronomy ?
The study of celestial objects and phenomena is called astronomy.
What is celestial objects ?
The moon is the brightest object in the night sky. The stars, the planets, the moon and many other objects in the sky are called celestial objects.
What is principle of kaleidoscope ?
Beautiful patterns are formed in a kaleidoscope because of multiple reflections
How to form multiple images?
Two mirrors inclined to each other give multiple images. Beautiful patterns are formed in a kaleidoscope because of multiple reflections
Helen A. Keller
Some visually impaired Indians have great achievements to their credit. Diwakar, a child prodigy has given amazing performances as a singer.Ravindra Jain, born completely visually impaired, obtained his Sangeet Prabhakar degree from Allahabad. He had shown his excellence as a lyricist, singer and music composer.Lal Advani, himself visually impaired, established an Association for special education …
Louis Braille
Louis Braille, himself a visually challenged person, developed a system for visually challenged persons and published it in 1821. Braille system has 63 dot patterns or characters. Each character represents a letter, a combination of letters, a common word or a grammatical sign. Dots are arranged in cells of two vertical rows of three dots …
What is the Braille
System?
The most popular resource for visually challenged persons is Braille. The present system was adopted in There is Braille code for common languages, mathematics and scientific notation. Many Indian languages can be read using the Braille system.
Care of the Eyes
Care of the EyesIt is necessary that you take proper care of your eyes. If there is any problem you should go to an eye specialist. Have a regular checkup—a) If advised, use suitable spectacles.b) Too little or too much light is bad for eyes. Insufficient light causes eyestrain and headaches. Too much light, like …