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.
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.
3 to 6 Months: During this stage your baby will gain better head control and have better movement of arms and legs. They generally grip onto anything they can get their hands on and put it directly into their mouth. Educational toys like rattles promote motor development and provide sensory stimulation. Since everything ends up in the mouth, educational toys that are chewable or soft plush are favorites. Babies need to experience different textures so vary the materials educational toys are made of. Activity centers provide lots of stimulation at this age. These educational toys normally have lots of buttons that produce sounds, lights, and give a variety of textures to explore. Hand-eye coordination will improve as babies explore the activity center. Parents are often on the move more with babies at this age. Activity bars that fit across a stroller, car seat, or bouncy chair that have dangling, squeaky toys and mirrors keep baby stimulated while on the move. Motor skills develop as baby reaches, hits, pulls, and kicks at the accessories on these educational toys.
6 to 12 Months: Your baby has much better control over arm and leg movement. By 9 to 10 months, your baby should be able to move around by some means- either pulling, crawling, or scooting. By 12 months they should be able to stand by themselves and many will even start walking. Educational toys including wooden blocks that baby can stack and knock down, throw, or bang together to make noise are good choices. By 12 months, educational wooden blocks can be used for early construction play to promote development of motor skills, cause and effect, sensory and visual stimulation. Educational toys like the Sensory Ball from Edushape, provides great stimulation with different textures. Once babies learn to sit up, they will enjoy rolling a ball and trying to catch it as you roll it back. Letting your baby chase the ball will encourage movement. Trying to figure out why a square block wont go through a round opening will help develop problem solving skills- though it may cause some frustration in the beginning. By the time your baby is 12 months, they will start to enjoy stacking activities, though they will need help in trying to get the right order. More interest in books will be noticeable now. Try to buy books that have pages with different textures and simple flaps. This will help to develop their sense of touch.
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.
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.