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Free space optical communications is a line-of-sight (LOS) technology that transmits a modulated beam of visible or infrared light through the atmosphere for broadband communications. In a manner similar to fiber optical communications, free space optics uses a light emitting diode (LED) or laser (light amplification by stimulated emission of radiation) point source for data transmission. However, in free space optics, an energy beam is collimated and transmitted t ....etc

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sir!!! i would like to know about the materials used in space re entry vehicles for my tchnical seminar... and i want a ppt about the topic.... ....etc

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1. The Sardar Sarovar project is located in
(A)Gujarat(B) Uttar Pradesh
(C ) Orissa(D) Madhya Pradesh

2. Which ministry conducts the decennial census in India?
(A)Ministry of Rural Development
(B)Ministry of Human Resource Development
(C )Ministry of Home Affairs
(D)Ministry of External Affairs

3. Who was the President of Indian National Congress when ‘Poorna Swaraj’ resolution was passed? 
(A) Motilal Nehru(B)Subash Chandra BoseSubash Chandra Bose
(C ) Gandhiji(D)Jawaharlal Nehru

4.Kolar mines in Karnat ....etc

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As electronic devices become smaller, lower in
power requirements, and less expensive, we have to adorn our bodies
with personal information and communication appliances. Such devices
include cellular phones personal digital assistants (PDAs) pocket video
games and pagers. Currently there is no method for these devices to
share data. Networking these devices can reduce functional I/O
redundancies and allow new services and conveniences.The
concept of Personal Area Networks (PANs) is presented to demonstrate
how electronic devices on and ....etc

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i like the topic and i want to prsent a seminor so, i would like to request you to send me related ppt and documentation
thanking you sir ....etc

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As electronic devices become smaller, lower in power requirements, and less expensive, we have to adorn our bodies with personal information and communication appliances. Such devices include cellular phones personal digital assistants (PDAs) pocket video games and pagers. Currently there is no method for these devices to share data. Networking these devices can reduce functional I/O redundancies and allow new services and conveniences.

The concept of Personal Area Networks (PANs) is presented to demonstrate how electronic devices on and ne ....etc

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Definition

The successful exploration of space requires a system that will reliably transport payload such as personnel and instrumental etc. into space and return them back to earth without subjecting them an uncomfortable or hazardous environment. In other words, the spacecraft and its payloads have to be recovered safely into the earth. We have seen the re-entry capsules and winged space vehicles approach the earth followed by safe landing. However, this could be accomplished only after considerable research in high speed aerodynamics and ....etc

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Sir i want to give first paper presentation.so,i need good ppt file.so that i can get merit certificate.thanking you
....etc

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Atmospheric reentry,
temperature variation during reentry of vehicles
....etc

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Abstract:
Lessons for Constellation from HST:
Adapting Human Spaceflight Vehicles to Achieve Multiple Goals in Space

Not long after the development of major elements of the Apollo program in the mid-1960's, engineers, managers, and scientists began to explore how those elements might be adapted to achieve additional priority national goals in space. Perhaps the best-known of these activities was the Apollo Applications Program, which in 1965 designed a modified lunar module that would permit astronaut-tended solar and astronomical observa ....etc

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