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1
Flat Earth General / Re: Flat earth and physics
« on: June 17, 2019, 08:00:51 PM »
Quote
Please read carefully - Does "g =GM/d^2" best in situ in F= GMm/d^2? - in the following link
https://en.wikipedia.org/wiki/Talk:Gravity_of_Earth/Archive_1#Does_%22g_=GM/d^2%22_best_in_situ_in_F=_GMm/d^2?
no idea how did you go through the aforementioned link but it's quite clear even for high school students that it is wrong. Anyway, again its freedom of acceptance. there is no compulsion

3- time dilation and relativity

plaese read carefully
Is the Einstein’s light clock shown in article standard?
https://en.wikipedia.org/wiki/Talk:Time_dilation/Archive_2018#Is_the_Einstein%E2%80%99s_light_clock_shown_in_article_standard?

Time dilation Triangle
https://en.wikipedia.org/wiki/Talk:Time_dilation/Archive_2017#Time_dilation_Triangle
The base of the time dilation triangle is taken in dilated time which is wrong while analyzing it by Pythagoras theorem. The lower mirror moves with v and covers a distance d in time t, not in dilated time t' - right

Relativity postulates/ Frame of references/ Escape velocity
https://en.wikipedia.org/wiki/Talk:Time_dilation/Archive_2011#Relativity_postulates/_Frame_of_references/_Escape_velocity

Second diagram from top
https://en.wikipedia.org/wiki/Talk:Relativity_of_simultaneity#Second_diagram_from_top

Relativity of Simultaneity (Experiment)
https://en.wikipedia.org/wiki/Talk:Relativity_of_simultaneity/Archive_2#Relativity_of_Simultaneity_(Experiment)


2
Flat Earth General / Re: Flat earth and physics
« on: June 17, 2019, 09:05:15 AM »
Quote
The mass of the earth vs a 5kg ball and a 100kg will show you there is no significant differnece between the reactions.

The significant difference depends upon the chosen falling masses. its all about the understanding of the concept of notion. Galileo might be right if i add " unless it is the natural tendency of all smaller objects to drive toward the massive object at the same rate in the region" - it will be easy to understand this if you read the newtons law of gravitation in the aforementioned link first.

3
Flat Earth General / Re: Flat earth and physics
« on: June 17, 2019, 05:55:43 AM »
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I don't know about "goat tree" unit, but I could understand the "goat per tree".

i said s = vt or v=d/t is ok which means all other statements where per is involved presumably. I mentioned it in my original statement, not in this forum. Your idea about the units will also be cleared but later when its turn comes. Thank you and nice a day as well

4
Flat Earth General / Re: Flat earth and physics
« on: June 17, 2019, 05:42:32 AM »
Quote
But you are being ridiculous! Galileo had no accurate timepieces anyway!
- Here, I'm not making fun of someone. it seems you didn't read my post properly because I told I would provide you with proofs one by one starting from Galileo. Second, you wouldn't talk about the timepieces if you had reached the crux of the theory. Anyway, since we believe in personal freedom, therefore, its your personal choice whether you agree or not. Although it's very simple to understand what i said in reference to the Galileo's statement  but still i can help if you have any question left

Galileo is done. Now

2- Newton law of gravitation.

Please read carefully - Does "g =GM/d^2" best in situ in F= GMm/d^2? - in the following link
https://en.wikipedia.org/wiki/Talk:Gravity_of_Earth/Archive_1#Does_%22g_=GM/d^2%22_best_in_situ_in_F=_GMm/d^2?

Addendum:
Further reading if interested

"No physical connection in Newton's idea" in the link
https://en.wikipedia.org/wiki/Talk:Cavendish_experiment#No_physical_connection_in_Newton's_idea

Radial Falling and Density of Lead in the following link
https://en.wikipedia.org/wiki/Talk:Cavendish_experiment#Radial_Falling_and_Density_of_Lead

Does the gravitational constant “G” which ensconced in both classical and modern physics subliminal? in the following link
https://en.wikipedia.org/wiki/Talk:Gravitational_constant/Archive_1#Does_the_gravitational_constant_%E2%80%9CG%E2%80%9D_which_ensconced_in_both_classical_and_modern_physics_subliminal?

5
Flat Earth General / Re: Flat earth and physics
« on: June 16, 2019, 05:44:15 PM »
Quote
No! That "both Einsteinian and Newtonian mathematical models of the gravity" are accurate is based on very strong evidence.
Newton's Laws of Motion and Universal Gravitation are quite accurate within regions where velocities and gravitational fields are "not too hig
h".

ok ill provide you with proof one by one. Let's start from the Galileo in the following link

*Is Galileo's statement correct, theoretically?*
https://en.wikipedia.org/wiki/Talk:Equations_for_a_falling_body#Is_Galileo.27s_statement_correct.2C_theoretically.3F

repeat the Galileo experiment with two different masses say 5 kg and 100kg but don't drop them simultaneously.
drop 5kg from height h and note the striking timing of earth and 5 kg, then
drop 10kg from the same height h and note the striking timing of earth and 100kg
you will find two different striking times - gravity (g) of 100 kg mass is greater than the gravity (g) of 5kg mass - agree.
so the earth will accelerate faster towards 100 kg mass as compared to 5kg mass

Quote
In physics it is incorrect to add or subtract quantities with different units but is is quite legitimate to multiply or divide them when the units are correct for the whole equation.

So momentum is defined as mass x velocity So in the SI System has units of kg.m.t-1.
And force is mass x acceleration [/b] So in the SI System has units of kg.m.t-2.

Where did you get these strange ideas from?

multiply 3 goats with 5 trees
3 x5 = 15 goat.tree so can pls tell me what does meant by 15 goat.tree what kind of unit is goat.tree

Quote
In physics it is incorrect to add or subtract quantities with different units but is is quite legitimate to multiply or divide them when the units are correct for the whole equation.

any reference pls

6
Flat Earth General / Re: Flat earth and physics
« on: June 15, 2019, 06:48:53 PM »
Quote
They are all wrong anyway except s=vt. i mean even for RE

Why is it?

because both Einsteinian and Newtonian mathematical models of the gravity are wrong - already proved

Guess law is derived from Newton law of gravity

Einstein's time dilation, relativity, etc are also wrong - already proved

rest are derived from Einsteinian and Newtonian mathematical models

similarly, the multiplication of goats and trees has no useful meaning in both physics and math because they can't be multiplied and the same is applied to momentum which = mass x velocity and all similar equation in physics

7
Flat Earth General / Re: Flat World From Space
« on: June 14, 2019, 07:23:26 PM »
how deep is it

8
Flat Earth General / Re: Flat earth and physics
« on: June 14, 2019, 07:00:11 PM »
They are all wrong anyway except s=vt. i mean even for RE

9
Eratosthenes measured the angle of the sun above Alexandria by measuring the shadow cast by a stick. He got 7.2° .

Assume the earth is bright while the sun doesn't have its own sunlight. As sun is 109 times bigger than the earth, therefore, keeping the distance constant (800 km between the stick and the well or b/t two cities) on the surface of sun, the measuring angle of the earth above Alexandria on the sun will be the shadow cast by a stick .i.e.   7.2° / 109 - RIGHT??

My estimated value of the circumference of the sun when extending the Eratosthenes experiment to the sun is way different than standard. Am I wrong? 

10
Quote
This is how:

Top edge of the Sun still sends enough (even too much) light to your eyes (and everywhere else).
Bottom edge of the Sun still sends enough (even too much) light to your eyes (and everywhere else).
Left edge of the Sun still sends enough (even too much) light to your eyes (and everywhere else).
Right edge of the Sun still sends enough (even too much) light to your eyes (and everywhere else).
Every other point of the Sun still sends enough (even too much) light to your eyes (and everywhere else).

sunlight takes an average of 8 min and 20 sec to reach the earth. Most of the sunlight is in the spacelike region (unable for us to see) and their direction of traveling keep them away further in the spacelike region of lightcone - true. 

11
Quote
Error that small wouldn't make Earth any less spherical. :)

how about similar cones formed by the spherical circles above, below, left and right etc of the cone as shown in the diagram

would the interference of light rays from these cones nullify the formation of shadows on earth

12
Quote
if a tree falls in the forest, does it make a sound -
i know about this philosophical thought experiment - changing of sound waves into electrical signals

I do hope you know how do our eyes allow us to see objects if not Google it for detail explanation - it's all about light. 

My question is how do our eyes see the whole image of the sun when more than 90% of sunlight rays do not even fall on the earth and ultimately into our eyes. No reflection is involved either

the spacelike region of the lightcone might help in understanding the question

13


Quote
The nearest I can guess as to your meaning is that every point on the sun's surface radiates light in every direction.

Yes, sun's surface radiates light in every direction. As said, our eyes can only things when light reflected off from it to our eyes. since earth receives a very small portion of light from sun (maybe 5% of the diameter of the earth - just guessing) and the rest of the light that radiates doesn't even fall on the earth and goes in different direction, therefore, how do our eyes see the aforesaid light rays which don't reach our eyes?

14
i have not yet gone through your mathematics but here is another question

here is how do we see an object

if the light from the sun strikes an object, the light reflected off that object moves through space and reach our eyes therefore

how come we see the full sun when earth receives a very small portion of light from the sun due to its smaller size as compared to the sun as said in the question.

15
Is it authentic

Earth receives a very small portion of light from the sun due to its smaller size as compared to the sun.

The sun is 109 times the diameter of the earth. So imagine a spherical circle (convex) of size earth on the surface of the sun. The intensity of light decrease as it increases its distance from the sun, therefore, the intensity diagram of light can be a shape of frustum cone which starts from a spherical type convex base on the surface of the sun. So does this mean sun rays located at the center of the cone would be perpendicular to the earth while resting at an angle?

there would be no shadow of the stick if light rays reach earth in form of wave

Is aforementioned true?

16
Here is the diagram (not to the scale) of two major pieces of plus (+) type container with lil bit more detail than before


Preparation of container

Make pieces/parts of the glass container of desired dimensions in desired units  (say length= 1meter, height=1', width = 1’) in a factory. The middle part is different than the other as shown in the figure. 

Each unit is marked with lines at regular interval for measurement in desired units as shown for measuring, leveling and plumbing reasons.

The height of 7.8” is also marked all the way on 2 sides of the container for curvature reasons as shown

Preparation of ground

Level the ground where the container has to be placed – it shouldn’t settle after placing the full container.   

The radius of the earth is constant in the area where the ground is leveled

Construction

Place the middle piece of the container first on the aforementioned-leveled ground– check its level and then plumb. This means both leveling and plumbing of the container are done at the same time if they are Ok.

Since the height of the middle portion of the container on a perfectly leveled ground is very small therefore it would be hard to notice discrepancies in plumbing of leveled container on either side if there is curvature of earth, therefore add next pieces of the container on all four sides  - Make sure each piece, which is added, perfectly leveled and plumbed. Keep adding units in each known direction and check its leveling and plumbing till a point would come where we wouldn’t be able to plumb the leveled piece of the container if the there is a curvature of the earth. In simple words, if we plumb the container then its level is disturbed and vice versa. This means the leveling and adjustment of the plumbing of the container can’t be done simultaneously.

For Flat Earth
Both leveling and plumbing of the container go together during assembling of the container over the entire length of one / two miles on a perfectly leveled ground

For Round Earth
Both leveling and plumbing of the container DON’T go together during assembling of the container over the entire length of one or two miles on a perfectly leveled ground. This means we need to change the design of the pieces in order to make them parallel to the curvature of the earth if there is an issue with simultaneous leveling and plumbing at any point during assembling of the container. This requires more materials – Another check

Additional check
Volume of water that will be added to the container = 7.98” x 12" x 63360" x 4 = 193669926.9 cubic inches =112077.504 cft after assembling ( 1 mile=63360 inches) =

The earth is round if the container requires water more than the pre-calculated volume of 112077.504 cft up to the marking level of 7.98” (all the way) or otherwise flat.

Since parts of the container can be transported and assembled easily and chosen ground upon agreement can be leveled as well, therefore, rechecking of the curvature can be conducted anywhere on the dry as well as frozen land.

Apropos funding –GoFundCurvature, if there is no theoretical issue with the sanity check. 

I can donate first if either flat/round earther or anyone else shows interest in initiating.

Note: design of the container can be modified for efficacy and accuracy reasons
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All of these methods end up needed optical alignment and eliminating all chance of refraction without it being in a vacuum as was done in the gamma ray "accidental" case I mentioned.

no refraction involved
Quote
At least in the European and Arabian countrues, including Persia (Iran), relativity few have doubted that the is a Globe for over 2000 years.
there is no solid proof that the earth is round or flat

17
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You ideas might be quite correct "in principle" but almost impossible to implement in practice because the earth is so large.
In a one mile long trough, assuming no breeze, the water at the ends is only 2 inches below a horizontal tangential to the centre.

7.98 inches is the minimum height requirement of water level for this experiment. Height of the water level can be increased if we increased the height of the container. The greater the thickness of water level and height of the container the greater will be the accuracy of the experiment. Similarly, the container is detachable and has 4 sided (covered) so breeze and its transportation to the other different part of the world for testing shouldn't be a problem. Also, we can build the container like a plus (+) sign or similar type in four different directions - 2 miles in each direction. I can design it. we don't even need water, it's just for the third check as the simultaneous check of the plumbing and leveling @ any point during assembling of the container on the leveled ground is enough as explained earlier

No problem in simultaneous checking of plumbing and leveling @ any point on the aforesaid container means the earth is flat as shown in Fig A otherwise the shape of the container will not be rectangular as shown in Fig B if there is curvature.

Moreover, the materials used in the container as shown in Fig B > materials used in the container as shown in Fig A

Note: The radius of the earth is constant for leveled ground



18
Quote
water (of known volume) level of height 7.98" @ A, B and C as shown in fig of a long rectangular glass container of width 1', height 1' and length 1 mile (perfectly leveled) under controlled condition can also be checked for curvature,
 



i thought it would be easy to understand but here is the more detail in order to avoid confusion of the previous post

it would be easy to assemble the factory made detachable parts (1m to 5m or more or less) of a container (marked on all sides) on a perfectly leveled ground. Two simple things but important to remember

1-   Earth is Flat if no issue with both plumbing and leveling of the construction of container over the entire length of one mile

2-   Earth is Round if plumbing and leveling can’t be done simultaneously during the construction of container over the entire length of one mile.


so here is the thrice check whether the earth is flat or round - A known volume of the water in the container is verified by the simultaneous plumbing and leveling as well as the known volume of material required for the construction of the container. 

19
No one comment on the

Quote
water (of known volume) level of height 7.98" @ A, B and C as shown in fig of a long rectangular glass container of width 1', height 1' and length 1 mile (perfectly leveled) under controlled condition can also be checked for curvature,
 



Fig A is the real construction of the container on site, not Fig B. As the container is perfectly leveled ( R of the earth is constant from A to B to C) and marked from A to B to C, therefore, curvature correction is not added while constructing the vessel on ground. Both AE and CD are plumbed not at an angle as shown in Fig B. Thus

From Geometry

Calculate the total volume of water of container as shown in Fig A
Add the aforementioned known volume of water to the empty container in Fig A
If the water level is up to the mark then it means the earth is flat
if it requires more water than the aforesaid known volume of water then it means earthy is round as
 
The volume of water in Fig B must greater than the volume of water in Fig A if there is curvature.

Materials required for a container in Fig B > in Fig A, therefore, the materials of which the empty container is made can also tell if the earth is flat or round if placed perfectly leveled and plumbed precisely for one mile entirely. Size of the container can be increased if accuracy is required.

20
I'm not a mavin of the subject to answer for the timing of dawn and dusk but if there is no sunset or sunrise at all then one shouldn't keep fats if the fast is based on from dawn to dusk - simple

here is the truth

https://quran.com/28/71-73

how about the moon sighting for the lunar calendar in such conditions which necessary and might help question

21
Quote
We can always wait for convenient refraction conditions to see the bottom of the opposite tripod.

refraction conditions can be overcome via many possible ways such as using a closed conduit or black carpet pavement, laser beam at night, water (of known volume) level of height 7.98" @ A, B and C as shown in fig of a long rectangular glass container of width 1', height 1' and length 1 mile (perfectly leveled) under controlled condition can also be checked for curvature, etc if wherewithal is not a problem

Quote
Just to be pedantic, RET does not claim a constant radius for the Earth.

MSL (Mean Sea Level) - though varies but shouldn't the radius of the earth be constant for all major oceans, not the dry land. check the elevation (which zero) of the surface of the ocean on google earth via curser.

22
Quote
There are numerous methods like these that "would work in principle" but require surveyor quality levels etc to make the measurements.

True - it also requires several perfectly leveled paved surface for at least one mile in different part of the world for repetition. we can measure correct curvature of the earth if the corrected radius of earth 6 378.1 kilometers.
if the base of the leg of a tripod (located at B) is visible from A or C @ height 7.98 inches then still we can say that there is no curvature

23
The earth in the following diagram is Flat if the angle BAD=BCD=0.014432459 Degrees

The earth in the following diagram is Round if the angle HAD=HCD=00.00746229 Degrees



Here is How

AC = 1 mile; AB=BC=0.5 miles=31680 inche as 1 mile = 63360 inches
BD=BE=7.98 inches thus BH=HE=BE/2=7.98/2= 3.99 inches

For Flat Earth

Tan (Theta=angle BAD=BCA)= 7.98/31680= 0.000251893
Angle BAD=BCA =0.014432459 degrees

NOTE: BE is visible from A or C for flat earth

For Round Earth
Angle HAD = BAD+HAB

Tan (theta=angle HAB)=HB/AB=3.99/31680
Angle HAB=0.007216229
Thus Angle = HAD= BAD+HAB= 0.021648689 deg

NOTE: Half of BE or BH is visible from A or C if the earth is round

We can increase the length of BD and BE for more accuracy

24
The Bedford level experiment can be repeated precisely (depend upon the budget of fes) over a wooden floor (perfectly leveled) if installed over a length of 6-miles above the watercourse (not too wide) or constructing a leveled sidewalk/walkway along the water channel or anywhere in the world where terrain is flat but had they deduct the difference in u/s and d/s level or was just ignored -

25
Quote
Why? They're both vertical, even if they diverge from each other.

it's clear from the geometry of ABDC that its not rectangle/square anymore but trapezoid or frustum if the earth is round

Quote
They do not have to a flat surface. It works with curvature surface too.

elevation on the surface of the sea is zero because the radius of the earth is constant and the same is applied to barometers

26
The Earth has a radius of approximately 3965 miles. Using the Pythagorean theorem, that calculates to an average curvature of 7.98 inches per mile or approximately 8 inches per mile (squared) – source Internet

As shown in the diagram

OB=OD=R=Radius of earth

ABDC is a continuous structure – we haven’t reached at that level so just ignore it

The world's longest and highest continuous bridges over land or water might help in finding AC and BD

Let AB and CD are the two high-rise vertical structures.
Height of AB = CD and length AC and BD must conspicuous (say at least one limes) for curvature
Two stable helicopters or hot air balloons at height A and C can also be used instead of high-rise vertical structures.

An object x falls and strikes at B if drops from height A, similarly
An object x falls and strikes at D if drops from height C

B and D can be found via a continuous laser beam from A to B and C to D respectively

Measure AB, BD, DC, and AC with modern equipment of engineering survey

If BD = AC then the earth is flat – case closed

If BD < AC then we can measure not only the correct curvature of earth but also its radius via geometry as shown in the figure

We need extra reinforcement (steel) in the lower portion of very high-rise building if the earth is round.



Addendum
Someone removed his post in reference to laser experiment. Anyway
Here is the laser experiment but another way (not close to the surface of the water)

if a laser beam hit point Q at a distance greater than one mile then the earth is flat
if a laser beam hit above point Q at a distance greater than one mile then the earth is round
if a laser beam hit below point Q at a distance greater than one mile then the earth is ....


27
Did Newton and Einstein not know that the earth is round when they said earth accelerates towards apple?

Newton Said: Earth also accelerate towards an apple but the acceleration of earth is so tiny to detect as compared to acceleration of an apple

Einstein said: An earth is a non-inertial frame of reference which accelerates upward

Were Newton and Einstein flat earther at the time of formulating their gravity equations?

28
No means both (The Newtonian and Einstien) mathematical models of gravity are WRONG - Right
And the subject of gravity (why earth attracts) is still MOOTED - Right

29
According to Einstein, gravity is not a force but earth is accelerated frame, therefore, is it possible for the earth to accelerate in two opposite direction simultaneously, for example, falling of antipodal apples from the same elevation at the same time.

30
Technology, Science & Alt Science / Re: Am I correct?
« on: April 05, 2019, 07:03:21 PM »
For any object in space– omitting gravity, IMPOV

An object of any mass (continuous) irrespective of size can be pushed or pulled without any resistance - Right?
Wrong.  You still have to overcome inertia which is the resistance to change in motion of a mass.
if an object of any mass (continuous) irrespective of size can't be pushed or pulled without any resistance then why the total momentum of the system remains sustained after a collision in the presence of resistance - please explain

as you said if i want to overcome inertia, i have to apply a force but aren't all the particles of mass falling towards their common point of the center of gravity which they make so where is inertia?

don't forget i said omitting gravity

Inertia means resistance or holding grounds - Shouldn't B break into parts before sweeping by A if really offer inertial resistance or holding ground against A

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