Register to reply

Secular matrix

by Entropia
Tags: matrix, secular
Share this thread:
Jan9-04, 04:36 PM
P: 142
does anybody know the origins behind the *name* secular matrix?

i don't understand why a secular matrix would be called... secular.
Phys.Org News Partner Science news on
What lit up the universe?
Sheepdogs use just two simple rules to round up large herds of sheep
Animals first flex their muscles
Jan9-04, 05:49 PM
Sci Advisor
PF Gold
P: 39,524
First, the term "secular" matrix is not a mathematical term- it is a physics term. If you look up the word "secular" in a dictionary, you will find that one of its meanings has to do with time. The "secular matrix" in quantum physics is the matrix that represents the evolution of a an operator over time.
Jan9-04, 07:49 PM
PF Gold
P: 8,147
Saeculum is the Latin noun meaning "a long period of time", sometimes interpreted in modern times as a century. Nominative plural saecula, plural genitive saeculorum (as in the great seal of the US: Novus ordo saeculorum = "A new order for the ages")

Secular effects in Astronomy are those that take place over a long time, gradually accumulating.

The other meaning of secular, "not religious", comes from the division in the middle ages of topics that were religious = heavenly = outside of time, versus the other kind that were bound to the flow of time found here below.

Register to reply

Related Discussions
What's a secular timescale? Astronomy & Astrophysics 3
Help! Diagonal matrix similar to upper triangular matrix? Linear & Abstract Algebra 1
Matrix, making R2 to R3, finding standard matrix A! where did i mess up? Calculus & Beyond Homework 1
Genetic Engineering and a Secular Morality System General Discussion 18
Secular reading at baccalaureate. Give me suggestions. General Discussion 6