Olinto De Pretto
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Olinto De Pretto
Olinto De Pretto
Olinto De Pretto (26 April 1857 – 16 March 1921) was an Italian industrialist and geologist from Schio, Vicenza. It is claimed by an[additional citation(s) needed] Italian mathematician, Umberto Bartocci,[1][2] that De Pretto may have been the first person to derive the energy–massequivalence
E=mc2{\displaystyle E=mc^{2}}, generally attributed to Albert Einstein. But this is refuted by Ignazio Marchioro in Quaderni di Schio, where it shows that the similarity was a coincidence, and that the energy proposed by De Pretto doubles the one of Einstein's formula.[3] Also, De Pretto suggested that radioactive decay of uranium and thorium was an example of mass transforming into energy.[citation needed]
.......
Contributions to physics and energy–massequivalence
From 1899 to 1903 De Pretto began to study the emerging field of nuclear physics and its relationship to astronomy. He focused on the theory of aether, a hypothetical substance that at that time was believed to fill all space.
As a result of his research on November 29, 1903, De Pretto published a 62page paper in the Atti del Reale Istituto Veneto di Scienze, Lettere ed Arti, vol LXIII (Proceedings of the Royal Veneto Institute of Science, Letters and Arts) entitled "Ipotesi dell'Etere nella Vita dell'Universo" ("Hypothesis of Aether in the Life of the Universe"). The paper was endorsed by the famous astronomer Giovanni Schiaparelli. De Pretto's paper was later included in the proceedings of an Italian scientific institute The Royal Veneto Institute of Science.[4]
This theory was similar to Samuel Tolver Preston's 1875 hypothesis that matter and energy might be interchangeable. De Pretto's theory was based on his hypothesis that a mass traveling at velocity v has the potential energy[5] (forza viva) proportional to mv2 (the exact formula is 1⁄2mv2). In the section of his paper headed Energy of the Ether and Potential Energy in Matter, De Pretto wrote:
Matter uses and stores energy as inertia, just like a steam engine that uses the energy in steam and stores energy in inertia as potential energy[... ] All components of a body are animated by infinitesimal but rapid movements equal to perhaps the vibration of the ether. It must be concluded that the matter in any body contains the sum of the energy represented by the entire mass of that body if it could move through space with the speed of a single particle.[6]
By theorizing the "vibration of the ether", De Pretto asserted that mass is vibrating energy and that mass and energy are therefore interchangeable. He then speculated that ordinary matter may be considered to be vibrating at the speed of light c.[citation needed]
According to De Pretto,
The matter of any body contains within it a sum of energy represented by the entire mass of the body[... ] Nobody will easily admit that, stored in a latent state, in any kilogram of matter, completely hidden to all our investigations, hides such a sum of energy, equivalent to the amount that can be extracted from [burning] millions and millions of kilograms of coal."
½mv² versus mc²
Further information: Mass–energy equivalence § History
De Pretto used the expression
m
v
2
{\displaystyle mv^{2}} for the "vis viva" and the energy stored within matter, where he identified v with the speed of light.[citation needed] According to Italian mathematician Umberto Bartocci, his formula precedes by two years, and is in agreement with Albert Einstein's later formula
E=mc² for mass–energy equivalence, which was derived by Einstein as a consequence of special relativity. According to Bartocci, Einstein may have learned of de Pretto's work through his SwissItalian friend Michele Besso.[7]
References
Umberto Bartocci, Albert Einstein e Olinto De Pretto—La vera storia della formula più famosa del mondo, editore Andromeda, Bologna, 1999.
Carroll, Rory (19991111). "Einstein's E=mc2 'was Italian's idea'". The Guardian.
Valente, Luca, De Pretto come Albert Einstein?, Italy: Università degli Studi di Bari "Aldo Moro", archived from the original on 20060408
Olinto De Pretto (1903). "Ipotesi dell'etere nella vita dell'universo (Hypothesis of Aether in the Life of the Universe)". "Reale Istituto Veneto di Scienze, Lettere ed Arti" (The Royal Veneto Institute of Science, Letters and Arts). LXIII (II): 439–500. (Accepted November 23, 1903 and printed February 27, 1904.)
Kelly, Al (2005). Challenging Modern Physics: Questioning Einstein's Relativity Theories. UniversalPublishers. p. 18. ISBN 1581124376. Extract of page 18.
Kelly, Al. Challenging Modern Physics. Extract of page 17.
Marchetti, Simona (13 April 2007).
"E=mc2: "Tutto merito dell'italiano Olinto"". Corriere della Sera.
Royal Society of London (1906).
"International Catalogue of Scientific Literature". International Catalogue of Scientific Literature (V): 83, 160. (Printed November 1906.)
https://en.m.wikipedia.org/wiki/Olinto_De_Pretto
Olinto De Pretto (26 April 1857 – 16 March 1921) was an Italian industrialist and geologist from Schio, Vicenza. It is claimed by an[additional citation(s) needed] Italian mathematician, Umberto Bartocci,[1][2] that De Pretto may have been the first person to derive the energy–massequivalence
E=mc2{\displaystyle E=mc^{2}}, generally attributed to Albert Einstein. But this is refuted by Ignazio Marchioro in Quaderni di Schio, where it shows that the similarity was a coincidence, and that the energy proposed by De Pretto doubles the one of Einstein's formula.[3] Also, De Pretto suggested that radioactive decay of uranium and thorium was an example of mass transforming into energy.[citation needed]
.......
Contributions to physics and energy–massequivalence
From 1899 to 1903 De Pretto began to study the emerging field of nuclear physics and its relationship to astronomy. He focused on the theory of aether, a hypothetical substance that at that time was believed to fill all space.
As a result of his research on November 29, 1903, De Pretto published a 62page paper in the Atti del Reale Istituto Veneto di Scienze, Lettere ed Arti, vol LXIII (Proceedings of the Royal Veneto Institute of Science, Letters and Arts) entitled "Ipotesi dell'Etere nella Vita dell'Universo" ("Hypothesis of Aether in the Life of the Universe"). The paper was endorsed by the famous astronomer Giovanni Schiaparelli. De Pretto's paper was later included in the proceedings of an Italian scientific institute The Royal Veneto Institute of Science.[4]
This theory was similar to Samuel Tolver Preston's 1875 hypothesis that matter and energy might be interchangeable. De Pretto's theory was based on his hypothesis that a mass traveling at velocity v has the potential energy[5] (forza viva) proportional to mv2 (the exact formula is 1⁄2mv2). In the section of his paper headed Energy of the Ether and Potential Energy in Matter, De Pretto wrote:
Matter uses and stores energy as inertia, just like a steam engine that uses the energy in steam and stores energy in inertia as potential energy[... ] All components of a body are animated by infinitesimal but rapid movements equal to perhaps the vibration of the ether. It must be concluded that the matter in any body contains the sum of the energy represented by the entire mass of that body if it could move through space with the speed of a single particle.[6]
By theorizing the "vibration of the ether", De Pretto asserted that mass is vibrating energy and that mass and energy are therefore interchangeable. He then speculated that ordinary matter may be considered to be vibrating at the speed of light c.[citation needed]
According to De Pretto,
The matter of any body contains within it a sum of energy represented by the entire mass of the body[... ] Nobody will easily admit that, stored in a latent state, in any kilogram of matter, completely hidden to all our investigations, hides such a sum of energy, equivalent to the amount that can be extracted from [burning] millions and millions of kilograms of coal."
½mv² versus mc²
Further information: Mass–energy equivalence § History
De Pretto used the expression
m
v
2
{\displaystyle mv^{2}} for the "vis viva" and the energy stored within matter, where he identified v with the speed of light.[citation needed] According to Italian mathematician Umberto Bartocci, his formula precedes by two years, and is in agreement with Albert Einstein's later formula
E=mc² for mass–energy equivalence, which was derived by Einstein as a consequence of special relativity. According to Bartocci, Einstein may have learned of de Pretto's work through his SwissItalian friend Michele Besso.[7]
References
Umberto Bartocci, Albert Einstein e Olinto De Pretto—La vera storia della formula più famosa del mondo, editore Andromeda, Bologna, 1999.
Carroll, Rory (19991111). "Einstein's E=mc2 'was Italian's idea'". The Guardian.
Valente, Luca, De Pretto come Albert Einstein?, Italy: Università degli Studi di Bari "Aldo Moro", archived from the original on 20060408
Olinto De Pretto (1903). "Ipotesi dell'etere nella vita dell'universo (Hypothesis of Aether in the Life of the Universe)". "Reale Istituto Veneto di Scienze, Lettere ed Arti" (The Royal Veneto Institute of Science, Letters and Arts). LXIII (II): 439–500. (Accepted November 23, 1903 and printed February 27, 1904.)
Kelly, Al (2005). Challenging Modern Physics: Questioning Einstein's Relativity Theories. UniversalPublishers. p. 18. ISBN 1581124376. Extract of page 18.
Kelly, Al. Challenging Modern Physics. Extract of page 17.
Marchetti, Simona (13 April 2007).
"E=mc2: "Tutto merito dell'italiano Olinto"". Corriere della Sera.
Royal Society of London (1906).
"International Catalogue of Scientific Literature". International Catalogue of Scientific Literature (V): 83, 160. (Printed November 1906.)
https://en.m.wikipedia.org/wiki/Olinto_De_Pretto
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