Phys1

Is gravity acceleration (g) per unit mass (kg)?. It must be. Gravity = mass (m) x g. This then means that gravity is purely acceleration and all objects fall at the same rate in vacuum regardless of their weights. Gravity = m x g, i.e. Kg x g /Kg = g.

2 hours ago, Phys1 said:

There is a lot of investigations now regarding the links between obesity and covid-19 as I heard on itv3 today. 

I posted in April 19 a question about the links of Covid-19 and Obesity. Sorry I do not know how to quote it here. It is on page 16 of this forum section.

There is a lot of investigations now regarding the links between obesity and covid-19 as I heard on itv3 today. 

I posted this on Corvid-19 forum and for quite a while I keep getting the reply : it is pending review. I need to know this forum members opinion. I am not trying to get any money out of it. I simply will be very happy if it offers a cure. The idea is as follows:

Can obese cure medicine be used to treat Covid-19 because the cure deals with fat reduction and the virus has a fat layer?

Can a list of all the essentials needed, including necessary conditions for creating every thing lead to the discovery of creation in numerical order and time, and predictions of future creations.

This is equivalent to producing the periodic table which has led to many discoveries.

44 minutes ago, Ghideon said:

How do you define a point in space?

1: If you try to define a point in space as XYZ and have no other object to compare against, how do you know if you are stationary or moving at a constant* speed relative to the point you just defined?
2: If you try to define a point in space as XYZ and have one other object to compare against, how do you know if you are moving or if the other object is moving or both are moving at a constant speed?

You can define a point XYZ in your frame of reference, or someone else's frame of reference, but not a point XYS in space. Space (spacetime) is not absolute.

If you see any object moving in space from x1y1z1 to x2y2z2 it is between two points relative to you, not between two points in space.

  

*) Note that I say constant speed. Acceleration can be measured.

Excellent and convincing description. Thank you.

Any where in space can be defined by XYZ. Any object moving in space can be seen travelling from x1y1z1 to x2y2z2. Thus moving from one space time location to another and its speed can be calculated as distance travelled in space divided by the time taken to cover this distance.

So, why any space location cannot be taken as a reference location?.

May be, I caused some confusion.

What I meant is, light speed is constant every where in space relative to all the space time locations. An observer travelling at any speed is only going from one location (space time) to another and therefore the speed of light relative to him is the same as that relative to his space location ( C ).

I needed to know whether the above explanation is right

Is light speed independent of observer?.

Space is full of photons moving in all directions at C speed relative to space time in all space time locations, so, moving observer is only changing space time location.