Energy phantoms/Lecture is a lecture from the radiation astronomy department on the fundamentals of observational information.

This image shows a pair of objects ejected from GRS 1915+105 moving apart at an apparently superluminal speed. Credit: Felix Mirabe, Saclay, France, and Luis Rodriguez, the National Autonomous University, Mexico City.

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Quiz

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1 Yes or No, An energy phantom is an observational phenomenon that can be described in general terms of distances and times.

Yes
No

2 True or False, A basic unit of length for measuring the diameter of the Sun is the kilometer.

TRUE
FALSE

3 Yes or No, A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent is called energy.

Yes
No

4 True or False, By assuming gravity causes the Earth and Sun to orbit each other, and assuming a mass for the Earth, a mass for the Sun can be determined from the orbital characteristics.

TRUE
FALSE

5 Yes or No, A physical quantity that denotes ability to push, pull, twist or accelerate a body which is measured in a unit dimensioned in mass × distance/time² (ML/T²): SI: newton (N); CGS: dyne (dyn) is called force.

Yes
No

6 True or False, By correlating the length of an Earth year to a fixed number of seconds, the length of time of a second can be determined.

TRUE
FALSE

7 Yes or No, In astronomy we estimate distances and times when and where possible to obtain forces and energy.

Yes
No

8 True or False, The source for apparent superluminal radiation may be superluminal acceleration.

TRUE
FALSE

9 Yes or No, Observationally, we may not know the origin of the force.

Yes
No

10 True or False, As the principal portion of the sunspot cycle corresponds well with a periodic conjunction of Venus and Jupiter, the increased electron flux to the Sun may cause the magnetic poles to reverse.

TRUE
FALSE


Hypotheses

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  1. Timing can be applied to changes in distance.

See also

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{{Charge ontology}}