Passive sensors detect natural radiation that is emitted or reflected by the objects or surrounding
area being observed. Reflected sunlight is the most common source of radiation measured by
passive censors. Examples of passive remote sensors include film photography, infra-red,
charge-coupled devices, and radiometers. Active collection, on the other hand, emits energy in
order to scan objects and areas whereupon a sensor then detects and measures the radiation that
is reflected or backscattered from the target. RADAR and LIDAR are examples of active remote
sensing where the time delay between emission and return is measured, stabilizing the location,
height, speed and direction of an object.
Komodo dragon is a member of the monitor family, Varanidae. It is the world’s largest living lizards
It grows to be 10 feet (3 meters) long and weighs up to 126 kg and belong to the most ancient
grouplizards still alive.
It is found mainly in the island of Komodo and on other small islands, Rinca, Padar, and Flores. The
natives call the dragon, ora, or buaya darat (land crocodile).
The Komodo dragon has a long heavy tail, short, strong legs, and rough skin. It is covered with small dull,
colored scales. It can sprint at up 18 km per hours, but only for short distances. When it opens its wide
red moth, it shows row of teeth like the edge of a saw.
Komodo dragons are good simmers and may swim the long distance from one island to another. Like
other lizards, they swim by undulating their tails, and their legs held against their body.
The Komodo dragon is totally carnivorous. It hunts other animals during the day. It hunts deer, wild pigs,
water buffaloes, and even horses. While smaller komodos have to be content with eggs, other lizards,
snakes and rodents. Komodo dragons are cannibals. The adult will prey on the young one as well as the
old and sick dragons.
Lizard digs a cave with its strong claws in the cave at night
Gold is a precious metal. Gold is used as ornaments or as money. Gold is found in many places,
but in a small supply. It is often found on the surface of the earth. Since gold is a heavy
substance, it is sometimes found loose on bottom of rivers. The gold is found together with sand
and rocks, and must be separated from them. It is simple to search for this type of gold. It is not
usually necessary to drill for gold, but when a layer of gold is located deep below the surface of
the earth, it is possible to drill a hole into the ground. Engineers have developed modern process
for removing gold from rocks. Since gold is not very hard, it is sometimes melted and added to
other substances for making rings, coins, and art objects. It will be priced forever because it is
beautiful, rare, and useful.
Blueberries, cranberries, and huckleberries-like dark skinned bunch grapes-contain restorative, a
potential anticancer agent. That’s a new finding from preliminary data from ARS collaborative
studies with Rutgers University-New Jersey and Ag Canada, Kent ville, Nova Scotti. Restorative
protects dark-skinned bunch grapes from fungal diseases and provides health benefits to