The remaining blue light, when mixed with the yellow light, results in white light. New phosphors are being developed to improve color rendering as shown in Figure 5. Figure 5.
How Long Do Parakeets Live? Parakeets tend to live 10 to 14 years, if in good health. Not all will live that long, however, since parakeets can fall ill even with proper care. Improper care can shorten their lifespan to a mere 4 years or less. Consider these parakeet care tips.
Parakeets are originally from India. So why are they able to survive - and thrive - here? Bedecked with emerald green feathers and a rose-red beak, the ring-neck parakeet brings a touch of tropical glamour to suburban gardens in London and the South East. There have also been sightings in the North West and in Scotland.