Red displays come from Lithium, Rubidium and Strontium. These metals give different intensities in color and some even play other roles. Lithium and Rubidium are metals in group one of the periodic table. Lithium gives a medium red color and is most useful, for this purpose in its carbonate form. Rubidium on the other hand gives a deep red/ violet-red flame and is also used to oxidize the mixtures in these explosives; without oxidation, they will not burn properly. Strontium burns with an intense red but it also has the job of stabilizing the elements used to make the fireworks.
Sounds Babies respond to sound and some of the best educational toys include rattles and musical toys. Soothing music such as lullabies is usually best. Auditory and musical toys are known to stimulate logical thinking and imagery in babies and in adults for that matter. One good educational auditory toy is the Electronic Metal Keys. These keys are good for a child 6 months and up. The Electronic Metal Keys are an imitation of the parents car keys. However, the Electronic Metal Key toy is safe for the child to chew on and has a push button that emits sounds like a car horn, doorbell, ignition, and remote control door.
Students of various educational institutes go on strike, almost yearly, demanding withdrawal of excessive fee hike. The tuition fees make up only about 13 per cent of annual expenditure in the present university education. It is now a formidable industry and the aim is to make money. Poor students, however, intelligent they may be, cannot afford to join colleges, professional institutions or courses. They may join such courses by putting their families under heavy debt of banks or financial institutions. Even in the USA, tuition fees contribute to about 15 per cent of the total annual expenditure on higher education. Nehru said: If all is well with universities, it will be well with the nation. Whereas Rabindranath Tagore once compared educated classes in India to A second storey in an old building that was added in, but unfortunately the architect forgot to build a staircase between them.
Fireworks light up the sky during celebrations; they give a wonderful show of color and shapes that fascinate the eyes and minds of many. The beauty of the display often leads many to wonder where the colors come from. The short answer is that they are the result of the burning of metals placed in these explosives. These metals are elements of the periodic table that burn at different temperatures and give off colors at their melting points.
Newborn to 3 Months: Babies cannot do much at this stage but their senses are eager for stimulation. Childrens educational toys with high-contrast patterns and bright colors will capture little ones attention. Babies can see color from birth but have difficulty distinguishing between similar tones. Educational toys designed with bright and distinctly different colors like red, green, black and white help babies differentiate shapes and patterns. Babies spend a good deal of time on their backs and sides at this age making colorful mobiles that play music a great educational toy choice. Babies are fascinated by their reflection in safety mirrors. They are not able to recognize themselves but the activity is great visual stimulation. Baby gyms are excellent educational toys because of the variety of stimulation they offer. Baby gyms have bright colors, a variety of attachments with different shapes, textures, and sounds. Most gyms now play music and have lights as well. These educational toy gyms require baby to pull, kick, or bat something to set off the stimulus helping to develop motor skills.