ADVANCED TECHNOLOGY/FUTURE:
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MATTER/ANTIMATTER MACHINE DEFINITION
ROBOTIC SUBMARINE
SPACE STATION
: a large artificial satellite designed to be occupied for long periods and to serve as a base (as for scientific observation)
— called also space platform
Recent Examples on the Web
Astronauts mounted three of the devices to the outside of the space station during a space walk.— Steve Nadis, Discover Magazine, "The Tiny Satellites That Might Fly to Another Solar System," 18 Oct. 2018The space station is currently home to three Americans, two Russians and one Japanese.— OrlandoSentinel.com, "NASA shipper Orbital ATK launches space-station supplies," 21 May 2018.WIRELESS CONTROLLER
ROUTER
Traditional routers are stand-alone computing devices made up of proprietary software loaded onto dedicated hardware. A virtual router is a software instance that performs the same functions as a physical router, while running on white-box gear -- either alone or packaged with other virtual network functions, like firewall packet filtering, load balancingand wide area network (WAN) optimization capabilities. Other devices, such as wireless access points and network switches, can also include built-in router functionality.
How a router worksIn the Open Systems Interconnection (OSI) model, routers are associated with the network layer (Layer 3), as they connect separate networks via the Internet Protocol (IP).
A router examines a packet header's destination IP address and compares it against a routing table to determine the packet's best next hop. Routing tables list directions for forwarding data to particular network destinations, sometimes in the context of other variables, like cost. They amount to an algorithmic set of rules that calculate the best way to transmit traffic toward any given IP address.
a="" routing="" table="" often="" specifies="" a="" default="" route,="" which="" the="" router="" uses="" whenever="" it="" fails="" to="" find="" better="" forwarding="" option="" for="" given="" packet.="" example,="" typical="" home="" office="" directs="" all="" outbound="" traffic="" along="" single="" route="" its="" internet="" service="" provider="" (ISP). Routing tables can be static -- i.e., manually configured -- or dynamic. Dynamic routers automatically update their routing tables based on network activity, exchanging information with other devices via routing protocols. These include: Border Gateway Protocol (BGP), Enhanced Interior Gateway Routing Protocol (EIGRP), Exterior Gateway Protocol (EGP), Interior Gateway Routing Protocol (IGRP), Open Shortest Path First(OSPF) and Routing Information Protocol (RIP). many="" routers="" also="" perform="" network="" address="" translation="" (NAT), shielding the private IP addresses of a local area network (LAN) by readdressing all outgoing traffic with a single shared public IP address. NAT helps both conserve globally valid IP addresses and improve network security.
SATELLITE DISH
The primary function of a satellite dish is to convert microwave signals into electric signals that can be used by a computer, television and other devices. The low-frequency signals can be received by the larger dishes, whereas small dishes are used for higher frequency signals.
Satellite dishes are used for all kinds of data communication. The signals can be sent anywhere without having miles of cables.
A satellite may also be known as a parabolic antenna.
The working principles behind satellite dishes are as simple as a conventional cable connection. A satellite transmitter is used to send the signals through the air to bounce them off to a satellite. These signals can then be received anywhere in the world with the help of receivers attached to satellite dishes.
The first satellite dishes were large and bulky, but have since shrunk to less than two feet in diameter.
There are three basic types of satellite dishes:
- Motor Driven Satellite dishes: Configured with a stepper motor. These can be controlled from the sky and moved to a suitable position according to a satellite position.
- Multi-Satellite dishes: Support multiple reflectors that enable them to receive signals from multiple locations simultaneously. The additional reflectors are placed vertically to capture all the signals that are originated from different locations.
- Very Small Aperture Terminal (VSAT) dishes: Employed for both consumer networks and private network operations. VSAT is most commonly used satellite dish in the world.
CONTROL PANEL
The Control Panel is a component of Microsoft Windows that provides the ability to view and change system settings. It consists of a set of applets that include adding or removing hardware and software, controlling user accounts, changing accessibility options, and accessing networking settings.
SATELLITE
MICROSCOPE
A microscope (from the Ancient Greek: μικρός, mikrós, "small" and σκοπεῖν, skopeîn, "to look" or "see") is an instrument used to see objects that are too small to be seen by the naked eye. Microscopyis the science of investigating small objects and structures using such an instrument.
The compound microscope has two systems of lenses for greater magnification, 1) the ocular, or eyepiece lens that one looks into and 2) the objective lens, or the lens closest to the object. Before purchasing or using a microscope, it is important to know the functions of each part. Microscope Parts.
