Our ideas on v_rec/c column added to J's calculator

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SUMMARY

The discussion centers on the potential addition of a 9th column to Jorrie's cosmic history calculator, specifically addressing the inclusion of recession speed history for a representative galaxy at today's Hubble distance (Rnow). Participants express concerns about overwhelming beginners with excessive information while also recognizing the educational value of such a column. The proposed column could clarify common misunderstandings about recession speed and its relation to cosmic expansion. Suggestions include labeling the column as "recession speed" (vrec) or as a multiple of the speed of light (vrec/c), alongside the need for an instructional manual to enhance user understanding.

PREREQUISITES
  • Understanding of standard model cosmology
  • Familiarity with cosmic distance measures, particularly Hubble distance
  • Knowledge of recession speed and its implications in cosmology
  • Basic grasp of calculator functionalities and user interface design
NEXT STEPS
  • Research the implications of adding a recession speed column in cosmological calculators
  • Explore user interface design principles for educational tools in astronomy
  • Learn about common misconceptions regarding recession speed and cosmic expansion
  • Investigate best practices for creating instructional manuals for scientific calculators
USEFUL FOR

Astronomy educators, software developers working on educational tools, and anyone interested in enhancing their understanding of cosmic expansion and user-friendly scientific calculators.

  • #31
yeah I was thinking of having 3 examples provided it doesn't make the manual too long.
 
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  • #32
Mordred said:
yeah I was thinking of having 3 examples...
Good. From my experience writing first-draft material, I'd urge not to worry about too long and include stuff. Let the editor shorten it by making cuts as he or she wishes.

Exercises are good. I hope you already have 3 picked out. But if you include more and some aren't used in the main manual the others can go into a "supplemental exercises" PDF file attachment. You never know how useful that might be. Let's write down any ideas for exercises we have.

That magic "deja vu" date, when everybody's recession speed was (once before) just the same as what it is today, I think was around year 3 billion. We could use Jorries "tablemaker" to find out the answer more precisely.
 
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