 as it was stablished after. 2. Equality of the inertial and the gravitational mass of isolated systems. 3. Validity of the theory of relativity (in the narrower sense); i.e., the equation systems are covariant with respect to linear orthogonal substitutions (generalized Lorentz transformation). 4. The observable laws of nature do not depend on the absolute magnitude of the gravitational potential (or gravitational potentials). Physically, this means the following: the set of relations between observable quantities that one can determine in laboratory is not changed if I bring the whole laboratory into a region of a different (spatially and temporally constant) gravitational potential. The enumeration that Einstein did of the postulates suggest as the more basic the law of conservation of momentum and energy since it would determine the physical character of the gravity theory. The other three postulates are components of the EEP therefore they determine gravity as effect of coordinates. Of course, Einstein emphasized in the special importance of postulate 1 since he wrote: "All theoreticians will agree with one another that postulate 1 must be adhered to" [13]. In the Entwurf theory, Einstein and Grossman from the Poisson s equation (5) had given material character to gravitational field, since they had written: "the gravitational equations are of the form: ∆μν(φ) = k(Tμν+tμν) (Eq. 6) These equations satisfy a requirement that, in our opinion, must be imposed on a relativity theory of gravitation; that is to say, they show that the tensor tuv of the gravitational field acts as a field generator in the same way as the tensor Tuv of the material processes" [6]. They warned: "An exceptional position of gravitational energy in comparison with all other kinds of energies would lead to untenable consequences". For example, one zero gravitational energy. Immediately, they obtained the equations: σ=(1,2,3,4) (Eq. 7) Then, they wrote: "This show the conservation laws hold for the matter and the gravitational field taken together" [6]. The conception of Einstein on gravitational field as a phenomenon of the energy is clearly ratified in "On the present state of the problem of gravitation" when he wrote: "According to the theory of relativity, the inertial mass of a closed system (the latter being considered as a whole) is determined by its energy. According to 2, the same must also hold true for the gravitational mass. Thus, if the
as it was stablished after. 2. Equality of the inertial and the gravitational mass of isolated systems. 3. Validity of the hypothesis of relativity (in the narrow-minded sense); i.e., the equation system are covariant with deference to linear orthogonal substitutions (generalize Lorentz transformation). 4. The discernible laws of nature do not depend on the absolute magnitude of the gravitational potential (or gravitational potentials). Physically, this intend the following: the set of relation between discernible quantities that one can determine in lab is not changed if I bring the unharmed laboratory into a region of a different (spatially and temporally ceaseless) gravitational potential. The enumeration that Einstein did of the postulates suggest as the more basic the jurisprudence of conservation of momentum and energy since it would determine the physical character of the gravity hypothesis. The other three postulates are components of the EEP therefore they determine gravity as consequence of coordinates. Of course, Einstein emphasized in the special importance of postulate 1 since he wrote: " All theoreticians will agree with one another that postulate 1 must be adhered to " [ 13 ]. In the Entwurf theory, Einstein and Grossman from the Poisson s equation (5) had contribute material character to gravitational sphere, since they had write: " the gravitational equations are of the form: ∆μν(φ) = k(Tμν+tμν) (Eq. 6) These equation satisfy a requirement that, in our opinion, must be imposed on a relativity hypothesis of gravitation; that is to say, they show that the tensor tuv of the gravitational field acts as a field generator in the same way as the tensor Tuv of the material processes " [ 6 ]. They warned: " An exceptional stead of gravitational energy in comparison with all early kind of department of energy would lead to untenable consequences ". For case, one zero gravitational energy. Immediately, they obtained the equations: σ=(1,2,3,4) (Eq. 7) Then, they publish: " This testify the conservation laws hold for the topic and the gravitational field taken together " [ 6 ]. The conception of Einstein on gravitational field as a phenomenon of the department of energy is clearly ratified in " On the present state of the problem of gravity " when he wrote: " According to the hypothesis of relativity, the inertial mass of a closed system (the latter being considered as a whole) is determined by its department of energy. According to 2, the same must also agree true for the gravitational mass. Thus, if the
 as it was stablished after. 2. Equality of tkw inervial ans the grxvitational mass of isolated ststemw. 3. Validity of the theury of repativity (in uhe narrower sensx); i.e., the equatjln svsvems are covarisnt with raspect to linedr oxthogonal substitutions (generalized Jorentz tgansformation). 4. The jbsednanle laws of nature do not depend on the absolute magmitude of the gravitationap pohential (or gravitahional potebtiajw). Physically, this means the followjng: the set of relations betweev obszrvable quabtutifv that one ran denermine in lanpratorf is noy changed if I brmng rhe whole laboratory mnto a region of a dyfferent (vpctially and temporallt xonstdnt) cravkratkonzl pktentiwl. Vhe enumerafion that Eunstein did of the koselkates suggesf as tre more basic the law of conservation of komsntum and energy since ut would determine thg physical character of the gravity theory. The other three [ostumxtew wfw fomponents of the EEP therefore they determinq gtanity as effect of coordinatex. Lf sourse, Einstekn empkzsjzed in the speciap imporjance if postulwte 1 since he wrote: "All theoretucians will cgrwe with one anothex that postuuate 1 musy be adhered to" [13]. In the Entsurf theory, Einstein xnd Grossman froo tme [oisson s equation (5) had giden matermal ckaracter to bravitwtional fifld, sltce they had writtfn: "thg gravhtational fquations are of the form: ∆μν(φ) = k(Tμν+tμν) (Eq. 6) These equsthonv satisfv a reauirement thae, in our opinipn, must be ioposed on z relatmvity theory of gravitatimj; that is to say, ther shiw tyat the gensor tuv of yhe gravinauional fieod acts as a field gevsrator in the scot qay as the tenxor Tud lf tra material psocerser" [6]. Theh warned: "An dxceltional position of cravjtational energy im gomparisob with ajl other kindx of energies woulf leav to uitenabke sonsequences". For example, one zsro gravihatlonal energy. Ymmeeiately, they obtained the equations: σ=(1,2,3,4) (Eq. 7) Then, they xrote: "This show the conwervation laws hold nor the mattxr and the gravhtational field takeb together" [6]. The cpnception of Einstein on grdvitahional field as a phenomenon of the energy is clearly ratified in "On the presenv ftate of ths prpblem oy gxavitatyon" xhxn he wrote: "Accorcing to the theory of relativitb, the inerdicl mass of a closed system (thr uatter being zonsidered as a whole) is determimed by its energy. According to 2, the same must also hold true foe the gravinztmonal mass. Thus, if tne
as it was stablished after. 2. Equality inertial the gravitational of isolated systems. of (in the narrower i.e., the equation are covariant with respect to linear substitutions (generalized Lorentz transformation). 4. The observable laws of nature do not depend the absolute magnitude of the gravitational potential (or gravitational potentials). Physically, this means following: set relations observable quantities that one can determine in laboratory is not changed if I bring the whole into a region of a different (spatially and constant) gravitational potential. The that Einstein did of the suggest the more the of of momentum and since it would determine the physical character of the gravity theory. The other three postulates are components the EEP determine gravity effect coordinates. course, Einstein emphasized special importance of postulate 1 since theoreticians will agree with one another that postulate must be to" [13]. In the Entwurf theory, and Grossman from the Poisson s equation (5) given material character to gravitational field, since they had written: "the gravitational equations are of ∆μν(φ) = k(Tμν+tμν) (Eq. These equations satisfy requirement in opinion, be imposed a relativity theory of gravitation; that is to say, they show the tensor tuv of the gravitational field acts as a in same way as tensor Tuv of the processes" They warned: "An exceptional gravitational in other of would lead to untenable For example, one zero gravitational Immediately, they obtained the they wrote: "This show the conservation laws hold the matter and the gravitational field taken [6]. The conception of Einstein on gravitational field as a phenomenon of energy is in "On the present state of the problem gravitation" when he wrote: to the theory of relativity, the inertial mass of closed (the latter considered as a is determined by energy. According to same must hold for Thus, if the
 as it was stablished after. 2. EquAlity of the InertIal And ThE graVitaTional mass of isOLateD systems. 3. Validity of the tHeory Of RElatIViTy (in tHe narroWEr SENse); I.e., ThE eqUaTIoN systEms Are covaRiant with rEspEcT to linear ortHOgOnal substiTutIons (generaliZed lorentZ tRanSFormaTioN). 4. The oBservaBLe laws Of nature dO nOT depenD On the abSOLuTe maGnitude of the graviTAtIOnal potential (oR graviTaTIoNAL poTenTials). PhysiCaLly, thIS means tHE fOLLOwiNG: the set of relaTions betweeN ObsErvablE qUanTIties tHat onE cAN deTermine in laBoraTory is not ChangeD If I brinG The wholE laborAtoRy iNto a REgIoN of A dIFfeREnT (spATiaLly and teMpOrAlly cOnstANT) GRaviTatIonaL poteNtial. The enumeRatIon tHAt EInsteIn did Of thE pOstulAtes suGgest As The more basic the Law oF conservaTioN oF moMeNtum aND energY siNce It would DetermiNE thE pHYSIcAl character of the grAvITY tHeory. The Other tHReE pOStulates ArE coMponENTs of tHe EEp ThErefore tHey detERmInE gravitY aS effecT oF coOrdInateS. of coUrse, EiNstein emPhasiZEd in the special IMportance of poSTuLATe 1 SInce He wRote: "All theoRetiCIans Will AGrEe wITh one AnothEr THaT Postulate 1 must be adheReD to" [13]. In tHe EntWurf theory, EinStein and GrOSSMan from tHe PoISsON s equation (5) had gIven mAterial chaRActer to gRavitAtional fIeld, since THEy had wriTteN: "thE grAviTATiOnal equations ARE of tHe Form: ∆μν(φ) = K(TμΝ+tμν) (Eq. 6) THesE eqUatIonS sAtisfy a reQuiremenT tHaT, iN oUr oPinioN, Must be imPoSed On A reLativITy theoRy of gRaviTaTiON; thAt is to sAY, tHEY shoW tHaT the TenSoR tuv oF the GRavItationAl field acTs aS A fieLd GeNerator In the same way aS tHe tensor TuV oF thE materIAL processEs" [6]. They warned: "An exceptionAL positiOn oF gravItatIonal enerGy iN compaRisON with aLl otheR kindS oF enERGies wOULd LeaD tO untenable CONseQuencEs". for eXample, oNe zero gravitationaL EneRgy. ImmediatelY, thEy obTAInEd tHE eQUatIoNS: σ=(1,2,3,4) (EQ. 7) tHen, they wrote: "ThiS show the coNsERvAtion laws hOLd fOr The mattEr and thE gravITationaL field takEn togetheR" [6]. THe coNCEptIon of EinstEin on graVitationaL Field AS a PhenoMenOn of thE eNerGy is cLearly RAtiFied iN "On the PrEsent sTate oF tHe probleM of gravitation" when he wroTe: "AccoRding To tHe theory oF reLAtiVity, the inErtiAl mass of a cLosEd sYstem (The LAtter BeinG CoNsiDEred aS a whOLe) is deterMInEd bY ITs Energy. AccorDING to 2, The saMe mUSt also Hold True for the gravitaTIonal mass. Thus, iF the
 as it was stablished afte r. 2. Equa lityofthe  i nert ialand the gravit a tion al mass of isolated sy stems .3 . Va l id ity o f the t h eo r y  of  r el ati vi t y(in t henarrowe r sense);i.e .,  the equatio n  s ystems are  co variant with  re spectto  li n ear o rth ogona l subs t itutio ns (gener al i zed Lo r entz tr a n sf orma tion). 4. The obs e rv a ble laws of na ture d on ot d epe ndon the abs ol ute m a gnitude of t h e g r avitational p otential (o r  gr avitat io nal potent ials) .P hys ically, thi s me ans the f ollowi n g: thes et of r elatio nsbet ween ob se rva bl e  qu a nt iti e s t hat oneca ndeter mine i n labo rat oryis no t changed ifI b ring the  whol e lab orat or y int o a re gionof  a different (s pati ally andtem po ral ly  cons t ant) g rav ita tionalpotenti a l.Th e e nu meration that Eins te i n  d id of th e post u la te s  suggest  a s t he m o r e bas ic t h elaw of c onserv a ti on  of mom en tum an dene rgy  sinc e  itwoulddetermin e the physical chara c ter of the gr a vi t y  t h eory . T he other th reep ostu late s  a rec ompon entsof th e  EEP therefore they  d etermi ne gr avity as effe ct of coor d i n ates. Of  cou r se ,  Einstein emph asize d in the s p ecial im porta nce of p ostulate1 since he  wr ote : " All t he oreticians wi l l  agr ee  with o neanother  th atpos tul at e 1 mustbe adher ed  t o"  [ 13] . Int he Entwu rf  th eo ry,  Eins t ein an d Gro ssma nfr o m t he Pois s on s  equ at io n (5 ) h ad  give n ma t eri al char acter togra v itat io na l field , since theyha d written:  " the  gravi t a tional e quations are of the for m : ∆μν(φ ) =  k(Tμ ν+tμ ν) (Eq. 6 ) T hese e qua t ions s atisfy  a re qu ire m e nt th a t ,inou r opinion, m ust  be i mp osed  on a r elativity theory o f  gr avitation; th atis t o sa y,t he y  sh ow tha t the tensor tuvof the gra vi t at ional fiel d  ac ts  as a f ield ge nerat o r in th e same wa y as thete nsor T uvof the mat erial pr ocesses"[ 6]. T h ey  warn ed:  "An e xc ept ional  posit i onof gr avitat io nal en ergyin  compari son with all other kind s of e nergi eswould lea d t o  un tenable c onse quences".For  ex ample , o n e zer o gr a vi tat i onalener g y. Immedi a te ly, t he y obtainedt h e  eq uatio ns: σ=(1,2 ,3,4 ) (Eq. 7) Then, t h ey wrote: "Thi s sh o w  th e c o nser va tion laws hold  fo rt h e matter  a nd the grav itationa lf ieldtakentogeth er" [6] . Th e  conce ptio n o f Einstei n o ng ravitat io na l  field  asaphenom enon o f  the e nergy is clearly  rati f i ed in "On  thepr esent s t ateof the pro blem of gra vitati on"whenhe wrot e:  "Acco rdi ng  to the th e ory of re lativ ity, th einer tia l mass  ofa close d sy st em(the latt e r  b e in gc ons ider ed as  a  who le) is de t erminedbyi ts ener gy . A c c ording to 2 , the same  mu st al s o  hold true fort he gravi tation al mas s. Thus ,  if  t he
 as_it was_stablished after. 2. Equality_of the_inertial_and the_gravitational_mass of isolated_systems. 3. Validity_of the theory of_relativity (in the_narrower_sense); i.e., the equation systems are covariant with respect to linear orthogonal substitutions (generalized_Lorentz_transformation). 4._The_observable_laws of nature do not_depend on the absolute magnitude_of the_gravitational potential (or gravitational potentials). Physically, this means_the_following: the set_of relations between observable quantities that one can determine_in laboratory is not changed if_I bring the_whole_laboratory_into a region of_a different (spatially and temporally constant)_gravitational potential. The enumeration that Einstein_did of the postulates suggest as the_more basic the law of conservation_of momentum and energy since_it would_determine the physical character of_the gravity theory._The other_three postulates are_components of the EEP therefore they_determine gravity as_effect of coordinates. Of course, Einstein_emphasized_in the special_importance_of_postulate 1_since he wrote:_"All_theoreticians will_agree_with one another that postulate 1_must_be adhered to" [13]. In the Entwurf_theory, Einstein and Grossman_from_the Poisson s equation_(5) had given material character_to gravitational field, since they had_written: "the_gravitational equations_are of the form: ∆μν(φ) = k(Tμν+tμν) (Eq. 6) These equations_satisfy a requirement that, in our_opinion, must be imposed_on a_relativity_theory of gravitation;_that_is to_say, they show that the tensor tuv_of the_gravitational field acts as a field_generator in the same_way_as the tensor Tuv of the_material processes" [6]. They warned: "An_exceptional position of gravitational energy_in_comparison_with all other kinds of_energies would lead to untenable consequences"._For example, one_zero gravitational energy. Immediately, they obtained the_equations:_σ=(1,2,3,4) (Eq. 7) Then, they wrote:_"This_show the conservation laws hold for_the_matter_and the gravitational field taken_together" [6]. The conception of Einstein_on gravitational field as a phenomenon of the energy_is clearly ratified_in "On the present state_of_the_problem of gravitation" when he wrote: "According to the theory_of relativity,_the inertial mass_of a closed system (the latter being considered as a_whole) is determined by its energy. According_to 2, the same must also hold true for the gravitational_mass. Thus, if the