# Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy

• sid_galt
In summary, a spaceship can be launched using two ideal springs, with one compressing and relaunching the spaceship as it passes by. The spaceship can also generate electricity for 10 years by shining a flashlight out of a window and utilizing the transverse Doppler effect while traveling at relativistic speeds. The energy transferred from the light to the solar panels is proportional to (intensity x time) and can be measured in both the panel frame and light frame. The cycle of the springs does not have an effect on the generation of electricity.
sid_galt
Suppose we have a two giant ideal springs very far apart from each other such that each spring can be used to launch a spaceship X to relativistic speeds. So a spaceship is launched using spring A to relativistic speeds, it reaches spring B which it compresses and is thus relaunched when spring B relaxes and the cycle thus continues.

Now say there is a person inside spaceship X who shines a flashlight out of a window of the spaceship onto say a large number of solar panels lined up along the route from spring A to B. Whenever the spaceship accelerates (decelerates) he switches off the flashlight.

Now from the perspective of the solar panels, since the spaceship X is traveling at relativistic speeds, say 1 minute of the shining of the flashlight relative to the spaceship corresponds to 10 years relative to the solar panels.
How is a 1 minute burn of a flashlight able to generate enough energy to generate electricity for 10 years? Is it because the chemical bond strengths change at relativistic speeds?

I think everything balances up without resort to the proper times of the two observers. The energy transferred from the light to the panels is proportional to (intensity x time). Measured in each frame the energy will be the same if the transverse Doppler effect is taken into account.

I haven't got time now to do the calculation.

Naively ( light frame quantitities are primed) L is the length of the panel, t is clock time and v is the velocity of the light emitter relative to the panels.

in the panel frame : t = L/v, I=I'*gamma
in the light frame : t'=gamma*L/v, I'=I'

(t*I)=(t'*I')

Looks a bit too easy, but given that light energy is proportional to frequency, it could be right.

Last edited:
sid: interesting question! Good perspective!

Yet I did not get the spring reasoning...why not just a spaceship passing by at relatvistic speed?? Does the spring continuing cycle have any effect...I don't see any.

## What is the "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy"?

The "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy" is a scientific concept that explores the impact of a short burst of light from a flashlight on the long-term energy output of the sun.

## How does a 1-minute flashlight affect the energy output of the sun over a period of 10 years?

The flashlight's light travels at the speed of light, which is approximately 299,792,458 meters per second. This means that the light from the flashlight will reach the sun in approximately 8 minutes. The energy from the flashlight will interact with the sun's energy, causing a small but measurable change in the sun's overall energy output over a period of 10 years.

## What is the significance of studying the "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy"?

Studying the "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy" allows scientists to better understand the complex interactions between light and energy in our universe. It also provides valuable insights into the behavior of light and its effects on larger celestial bodies such as the sun.

## Can a 1-minute flashlight actually affect the energy output of the sun over a period of 10 years?

Yes, although the effect may be small, it is still significant and measurable. This is due to the fact that light travels at incredibly high speeds and can have a powerful impact on energy systems, even over long periods of time.

## What are the potential implications of the "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy"?

Studying the "Relativistic Effects of 1-Min Flashlight on 10-Yr Solar Energy" could have potential applications in fields such as astrophysics, solar energy research, and space exploration. It could also contribute to our understanding of the broader concepts of relativity and the behavior of light in the universe.

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