Archive for the ‘large solar lights’ Category

Could telescopes eventually clearly show extra-solar planets?

Wednesday, September 30th, 2009

The further away objects are, the more difficult they are to see: My understanding of why this is so, is that less light from them reaches us. And/or that the light from them diverges, so you need a lens bring the object into focus.

My understanding of telescopes is that they have large lenses that improve focus, and more light-sensitive digital sensors that discern very faint objects. And positioning them in space avoids interference from the Earth’s atmosphere.

Since both lenses and light-sensors are continually improving, is it plausible that we will eventually have telescopes that allow us to view planets 100s of light years away as clearly as those in our own solar system? Or is there a physical limit to how much we could improve telescopes?

i think the day will come when we build a ‘Hubble’ type observatory on the moon…
and i suppose there is a limit, but we are a long way from that limit

What Sirius look like if it was only one light year away?

Monday, September 28th, 2009

What would sirius, the brightest star in the sky being twice as large and twenty times brighter than our sun, look like in our sky at one light year away? it is now 8.7 light years away. Would it provide us with any solar light? would it look more like a sun or would it still just look like a realy realy bright star?

It would just look like a very bright star

Best place to buy solar panels online?

Saturday, September 26th, 2009

I’m looking to buy a solar panel online. Hoping for about 65 watts and looking for the smaller more durable variety (monocrystalline?) as opposed to larger amorphous silicon.

Any ideas where I can get the best deal? And what brand to look for?

I’ve tried Ebay but ended up with poor quality ones. Just looking to make a simple system with 1 panel, 1 battery, 1 charge controller and 1 inverter to power and recharge my laptop and power a dozen or so LED lights.

Ideas anyone?

One company I really respect is realgoods.com and have had some bad experiences with kingsolar.com.

Does our Solar system still retain a large portion of the velocity?

Thursday, September 24th, 2009

generated by the Big Bang, theorized at beyond the speed of light (+)

Our solar system does have velocity relative to other things. It also has angular momentum, which is ALWAYS conserved – so it will never be lost.

There is nothing beyond the speed of light and I have never read anything (other than science fiction) which suggests there is.

No matter can travel faster than the speed of light although 2 things I can think of are hypothesised to. One is the rate of the expansion of space (non-material), and also the interaction between quantum particles (also without mass – only information is transferred). In this second case, it has been experimentally proven I believe in the UK within the last year.

However for the purposes of your answer, you have possibly mis-read something if you think our velocity is somehow a function of FTL travel.

Hope this helps a bit…

Is it possible to use a Solar Panel to power a lightbulb to power a Solar Panel?

Thursday, September 24th, 2009

Connect my computer up with a Solar Panel to power it,
Then put the Solar Panel in front of the computer screen.
Then shine a torch at the solar panel for 5 seconds.
Then the light will go to power the computer, and the computer screens light will shine on the panel to power it and it will continue and continure

This is a very large solar panel i am talking about, and a very bright LCD Screen. Or substitue lightbulb for computer

That wouldn’t be possible, because asides from light, there will also be output of heat and sound, other forms of energy.

The computer won’t have sufficient energy for subsequent runs, because most of it is lost as heat and sound, which are not absorbed by solar panels.

Can solar storms affect Earth’s weather?

Thursday, September 24th, 2009

Solar storms, or coronal mass ejections (CMEs), eject plasma and charged particles which, when they hit earth, can interfere with satellites and electricity. They also cause the Northern and Southern lights.

My question is- if there was a huge solar storm, with large amounts of plasma and energy hitting earth, would or can it affect the weather in any way? Are there predictions that it can? How can it affect earth besides interfering with electricity?

Solar storms can only cause electrical interferance over the earth.Weather is not affected by them.

Who thinks that we should power traffic lights with solar panels?

Thursday, September 24th, 2009

The solar panel wouldn’t need to be very large, and for the most part could be on the back or top of the street light. At night, they could be powered the same way they are now or by batteries that the solar panels could be charging throughout the day. Please explain to me if you think this is good or bad.

China already does this on all new install in many parts of the country. It is a small panel with LED lights, they work fine.