Gawdzilla Sama
Valued Senior Member
The Sun runs on a multi-year cycle of 11 years, IIRC.No. Only the day and the year are natural.
The Sun runs on a multi-year cycle of 11 years, IIRC.No. Only the day and the year are natural.
So are these the only natural phenomenon natural units of time?
No others?
Only two?
The rotation of the galaxies.No. In general, the day and the year of all planets.
The rotation and translation of all stars.
They define a natural (not artificial) phenomenon.
The day is the passed time (duration) between two consecutive midnights or middays.
So the speed of light (constant in a vacuum) is not then a light year (more precise than any planet year) MORE naturalNo. In general, the day and the year of all planets.
The rotation and translation of all stars.
The rotation of the galaxies.
The rotation of the local group of galaxies.
The rotation of the local super group of galaxies.
The amount of time it takes a neutron to orbit an nucleus.
Seriously, don't think small.
How will you determine midnight?
How will you determine midday?
Of what use is a time unit that is continually changing?
How can you use a unit that is different every time you measure it?
And of what use is a time unit that takes an entire day to elapse?
Great. You can measure things that occur over weeks and months. But can you measure how long a rock takes to fall, or how fast a gazelle can run?
Wow! That gazelle ran one hundred yards in ... (carry the one, round off) 0.000011905 days!
man madeSURVAY
What is your opinion about time?
1. It is objective (real)
2. It is subjective (ilussion)
3. It is subjective (a priori)
4. It is a duality (real)
5. Other
In Physics time is the measurement and the measurement was an invention by humans .A "light-year" is a measure of distance, just like "parsec". Sorry, Han.
In Physics time is the measurement and the measurement was an invention by humans .
That is an interesting definition of time, is there any math to go with that?Patrice Dassonville then puts forward a general definition of time, as “a concept
corresponding to what separates two states of a system”. He then examines the
etiology of aging, distinguishing between biological and chronological age. The
physical inexistence of time is linked to the fact that time has no source
From
The Invention of Time and Space by
Patrice F. Dassonville
Reference, please.In Physics time is the measurement and the measurement was an invention by humans .
https://en.wikipedia.org/wiki/Time_in_physicsReference, please.
Time in physics
is defined by its measurement: time is what a clock reads
How can you use a unit that is different every time you measure it?
I agree, but a light-year is a measure of distance, not time. Walk it or fly it, it's the same length.https://en.wikipedia.org/wiki/Time_in_physics
Yes time dilation is in trouble lol
Humans invented the clock and any consequence action or theory about the clock can only be invented also.
A day is a general term for a period of light and a period of dark that is a result of one rotation of the Earth.. We give this day a measurement and divide the measurement into increments. A day on Earth is a variable and our rotational clock speed of the Earth is a variate and our other clocks are also a variable. However an Earth day is not the same as the constant day of space.I have never said that the duration of the day is constant.
I have just said is natural.
A light year (ly) is t/dx of the speed of light. It is a velocity.I agree, but a light-year is a measure of distance, not time. Walk it or fly it, it's the same length.
A light year (ly) is t/dx of the speed of light. It is a velocity.
t is time
d is distance
x is vector
No but the book is very detailed and while I never considered to question his conclusion about time now that you brought it up, and I have given it some thought, I am at a loss to see how he would require / use maths to prove time does not existThat is an interesting definition of time, is there any math to go with that?
So, we're 7,000,000 miles per hour from the nearest star?A light year (ly) is t/dx of the speed of light. It is a velocity.
t is time
d is distance
x is vector
I don't think we're going to get him off that track.A light year is defined as the distance light travels in 1 year. This is approximately 300,000 km/sec x 60 sec/min x 60 min/hour x 24 hour/day x 365 days.