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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 10/07/2015 05:15:59 »

The best estimate I have seen is that the surface of the earth will cool to about 30°K much the same as the Kuiper belt objects maintained by radio active decay of the core.

jccc

The SETI people say that with Arecibo size antennas communication should be possible to 1000 LY,s

what's on SETI peoples minds?

" hello, hello, we earth scientists, how are you star people?"   wait 1000 years for a message like

"haha,haha, we star sheeper, we don't like people"

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Physics, Astronomy & Cosmology / Re: What would happen if two electrons were forced to fuse together?

« on: 10/07/2015 04:24:24 »

There's no way for combining electrons or even neutrons to form black holes. Black holes being a myth. The EM force is 39 orders of magnitude greater than the gravitational force - gravity simply isn't powerful enough to overcome it to form a black hole. This makes dark matter and dark energy mythological also. Science is about observation and empirical data, not speculation or beliefs, beliefs are the purview of religion - not science.

:-) Peter

you can say that again again again again!

who is going to listen? beside me.

electron emit photon? change energy level? graviton? orbital? standing wave?

my dear Lord!

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 10/07/2015 04:17:38 »

is any light sail bigger than earth?

why is sunlight photons momentum not sailing earth? did we changed orbit?

if sunlight has momentum, the space station will be pushing away from the sun, did it happen?

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 10/07/2015 03:46:12 »

why is photon particle beam able to cut metal not move flame? not relevant?

shooting gun able to move water, produce water flow, observable. move a flame is not move ocean. your argument is pretty weak.

agree?

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Physics, Astronomy & Cosmology / Re: What would happen if two electrons were forced to fuse together?

« on: 10/07/2015 03:37:34 »

if you cannot put 2 electrons together, how can anything able to separate 1 electron and 1 proton?

isn't science says electron has wave property, maybe 2 electrons able to become 2 in 1 waveelectron?

in theory if 2 electrons can be lock into 1 piece, it will become 2 tiny dots with 2 negative charges.

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 10/07/2015 02:55:34 »

light is em wave? or photon particle? or both?

why is powerful laser particle beams able to cut metal but not bend flame?

how sunlight heats up water? photons hit water atoms so electrons in water jump to higher orbitals?

if you answer those questions to understandable logic, i'll accept your theory of light.

all scientist can be wrong,  before science able to explain everything in detail perfectly. like how electrons emit photons.

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 10/07/2015 01:30:06 »

i know what's going on. i explained in my theories. you just don't understand/accept.

rather say they just do.

any of my ideas has any logic problem? be appreciate you point it put, so we all can learn from you.

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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 10/07/2015 00:41:22 »

4 light years away already a tiny dot. 1000 light years away? the tiny dot maybe a galaxy.

compare our radio range and power, increase the out put power, see how far it can go. 1000 light years away? I doubt.

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 10/07/2015 00:26:57 »

nature is simple, straight forward. follow physics laws, all things work well.

men invented science, science is always correcting, particle physics have many holes.

no 1 can explain how 1 electron and 1 proton make up an atom yet.

can you answer how electron emit photon? in detail and laws?

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Physics, Astronomy & Cosmology / Re: Does anything last forever?

« on: 10/07/2015 00:20:48 »

time to  save some eggs!

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Physics, Astronomy & Cosmology / Re: Does anything last forever?

« on: 10/07/2015 00:19:31 »

start a new fruit fight?

sounds good enough.

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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 09/07/2015 23:20:03 »

are their view of energy and photon correct?

no matter how big is the antenna, the out put power is limited, 1000 light years? we can hardly see the stars with best tools, to get radio communication?

obviously, they find no lives within 1000 light years so far?

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Physics, Astronomy & Cosmology / Re: Does anything last forever?

« on: 09/07/2015 22:23:56 »

if nothing last forever, where matter and energy go at last?

empty void? does it last forever?

we are talking about time, is time has beginning or ending?

when time ends, what time is it?

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 09/07/2015 21:02:21 »

i still cannot figure out how photon is emitted.

even if electron really has orbitals and able to move between orbitals, how is the electron's changing momentum transfer into a particle and travel at c?

is photon a pocket of energy condensed into a particle? what kind of energy? momentum? em force? vibration force?

how photon is absorbed? reflected?

use sun light to heat up water, how water atoms eat photons and heat up? electrons eat photons and move to higher orbitals?

or sun light is vibration force that makes water atoms vibrating faster?

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 09/07/2015 19:41:53 »

so you are suggesting all matters are within a bigger space that has no boundary?

all matters end up gravitation into a hot ball and radiate out photons into space till 0 K and the universe becomes a cold matter ball in infinite space, all energy is missing forever?

or it bounces back bang the matter ball?

is it possible when things go infinity big, they become infinity small?

we had to stand on solid ground, are we sure the size and age of the space yet?

much to think, a small head. help me!

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Physics, Astronomy & Cosmology / Re: Do photons have colours?

« on: 09/07/2015 18:14:35 »

photon, a pocket of energy, a mass less particle travels at c speed, is impossible to exist according to energy conservation law.

photons spread into dark space simply vanished and never return. energy is lost.

logically sounding?

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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 09/07/2015 17:58:47 »

i see 2 forms of force in nature. static force such as gravity keeps things in order, such as attract matter into sphere, keep planets in orbits.

vibration force such as gravitational radiation transfers energy. energy/vibration force is always at moving at c speed, it can never stop, it can only exist within atoms vibrations.

where matter and energy came from? how matter and energy evolved into life? or life is first? i eager to learn.

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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 09/07/2015 17:39:55 »

the nearest star is 4 light years away, if people like us live on a planet orbiting that star send message to us, we won't be able to get it. think about how dime is the star light that powered by the whole star?

according to physics laws we knew/proved, we can't even send a light beam to them that is detectable to them. 

if life is everywhere, it is separated by distance too far to reach. we are alone, don't fight.

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Physics, Astronomy & Cosmology / Re: Does anything last forever?

« on: 09/07/2015 17:25:08 »

space, time, matter, energy.

so far as we know seems last forever.

like we really know the meaning of last forever.

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Physics, Astronomy & Cosmology / Re: If our sun suddenly vanished, will earth get colder?

« on: 09/07/2015 14:37:34 »

we can grow using artificial lights.

pole area without sunlight 6 months in winter, people survived.