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.
4K, also known as ultra HD, is the biggest thing in TV nowadays â literally. This format offers four times the pixels of HDTV, plus better color, and is designed especially for very large TVs. That said, manufacturers are building 4K resolution into smaller sets, currently down to about 40 inches.K tv's are a huge waste of money it's like buying a blu-ray player in 1995 there is no content that will support 4k for at least 5 years, cable still maxes out at 720p and even blu-ray discs are not large enough to handle true 4k.