A green pigment(chlorophyll) is present in the leaf to increase  light absorption ad thus rate of photosynthesis increases.    4. The leaf has large networks of vascular bundles to richly supply  the leaf with water(xylem) and transport food to other parts of the  plant(phloem).he Chlorophyll is in the top palisade layer closer to the light so it can absorb lots of light energy for photosynthesis. The upper epidermis is also transparent which also helps the light to reach the chlorophyll. + 17 others found this useful.
According to the THX standard, a 50 TV is optimally viewed from 6 to 7 feet away. A 60. TV is optimal at almost 8 feet. 70 is recommended at almost 10 feet and 80 and up even further. You start getting any bigger with your TV screen size and you might not have the space for your couch to go back far enough.
Larger TVs would also weigh that much more. Heaviest. The heaviest CRT TV weighed 750 pounds and measured 40 inches. As CRT technology improved, manufacturers were able to reduce the weight of their TVs. The first CRT TVs were much heavier than later models. For example, a 32-inch TV in the early 90's may have weighed as much as a 40-inch in the year 2000. Record Holder Mitsubishi was experimenting with larger CRT models and produced only a few 61-inch CRT TVs.