PV Gap

Andrew Said:

how does space vehicles travels outside solar system?

We Answered:

Law of physics:
"An object in motion tends to stay in motion".

In space, where there is no air and nothing to cause friction, a space ship will STAY MOVING until it hits something. But without fuel, it can not change direction, adn it cannot accelerate (or decelerate)! it will continue to travel in a straight line.

Solar power provides ONLY electricity to power computers and such. Solar power DOES NOT provide any FUEL needed for changing course or changing speed.

You can use the "slingshot effect" to let gravity help speed up a space ship, but once the maneuver is done, there is no more effect from gravity -- until you come near to ANOTHER sun in another solar system!

So, without fuel, solar power, or gravity, there is NO CHANCE of accelerating the space craft any greater.

Right now, there are FIVE space craft that are on path to leaving our solar system -- Pioneer 10, Pioneer 11, Voyager 1, Voyager 2, and New Horizon. Pioneer 10 and 11 are DEAD -- they no longer function. Voyager 1 and 2, and New Horizon, are still functioning -- a little bit.

New Horizons has not yet left the solar system, but is on path to do so.

You can find more information here:
heavens-above.com/solar-escape.asp

Tyrone Said:

active and pasive solar energy system can anybody help to make model on dis topic?

We Answered:

Passive solar heating involves using the Sun's energy to directly warm a room. This is easily achieved by having large south facing windows (or a south facing conservatory) and small north facing windows (or the other way around if you live in the Southern hemisphere).

Active solar heating is using the Sun to warm a medium (most commonly water). This water may then be pumped around a house to provide heating. This method requires the use of a solar collector (or black box through which water pipes pass back and forth so the water inside heats up).

If you e-mail me then i'll send you a document on solar heating.

Heidi Said:

Is it possible to install Solar Energy system on first floor in city like Mumbai, Nepeansea Road, where there?

We Answered:

Solar power is the technology of obtaining usable energy from the light of the Sun. Solar energy has been used in many traditional technologies for centuries and has come into widespread use where other power supplies are absent, such as in remote locations and in space.

Solar energy is currently used in a number of applications:

Heat (hot water, building heat, cooking)
Electricity generation (photovoltaics, heat engines)
Desalination of seawater.
Pl visit www.solar power.org for further information.

Ross Said:

What are the limitations of using Solar Energy in vapour absorption system for Refrigerator or A/C?

We Answered:

What would otherwise be the "condenser" has to carry the heat
away from the "absorber" plus the heat from the boiler.
Large buildings cool this way using steam (both summer and winter)
A solar collector could use a transfer fluid (special oil) to carry
heat to the boiler, or store the heat for cloud covered days.