Papers by Herman F Boon
The Republic of the United Netherlands was the most important producer of thimbles in the world f... more The Republic of the United Netherlands was the most important producer of thimbles in the world for almost two centuries. The invention of the multiple knurling wheel by Gerart van Slangenborch in Amsterdam around 1600, which greatly accelerated indenting thimbles, was vital for the rise of a thimble industry in the Republic. This invention raised productivity, as a result of which the price of thimbles fell and markets which until then had been supplied by Nuremberg were taken over. During the first decades of the 17th century thimbles were made of brass and steel plates by soldering. Casting brass thimbles was a second important invention, made by Jacob Schot. He obtained a patent in 1632, which held until 1646. By this new process labour was saved once again, so that a second price reduction followed and the soldered brass thimbles were pushed out of the market. The composition of the moulding-sand, which was not equalled by thimble-makers abroad for more than one century, was critical. In the last quarter of the century a new production improvement led to the same output being achieved with less equipment. Thanks to their technical insight the thimble-makers in the Republic gained an important technological lead on their foreign colleagues. From the eighties of the 17th century company secrets came into the possession of entrepreneurs in successively France, England, Germany and Sweden, so that the technological lead eroded gradually. Their methods were buying away skilled labourers and engaging in industrial espionage. Moreover, the thimble-makers discouraged experimental research, albeit unintentionally, by forming a cartel in 1686, which stood the test of time for fifty years, stipulating that new discoveries had to be shared among all fellow thimblemakers. Equally counter-productive of new ideas was the practice of choosing managers on the basis of family ties rather than proven capabilities. To crown it all, the invention of deep drawing in England in 1769 was an immediate success, so that deep-drawn thimbles soon swamped the European market. Towards the end of the 18th century the technological lead had turned into a disadvantage. Van Slangenborch made his invention in Amsterdam and sold it to Baptista van Regemorter, an immigrant from the Southern Netherlands, who lived in Haarlem. Nevertheless the deviser of the knurling wheel continued to apply the invention himself. Since Amsterdam had become the most important trade centre of Europe, it was an attractive place of business and therefore, imitators also founded thimble factories in or near the city. Haarlem, favouring the presence of a textile industry and bleaching business, frowned upon metal processing in any shape or form. This explains why Van Regemorter took his business to Schoonhoven, which housed some metal industry. In 1620 Claes Jacobsz Schot moved from there to Vianen and started producing brass thimbles. Whether this removal took place because of personal circumstances or because that town offered more favourable establishment advantages for the business than Schoonhoven must be left out of consideration. In any case, it had better connections and offered exemption from the excise duty on coal. Mariken Pieters, the widow of Claes Jacobsz Schot, moved to Utrecht and obtained permission to use the flow of the Zwarte Water in 1628. This prospect may have been the motive for her move. Moreover, Utrecht had much metalworking. However, the place of
Chemie Ingenieur Technik, Jun 1, 1979
Chemie Ingenieur Technik, 1979
Oud Utrecht Jg 70 Nr 2 P 38 41, 1997
Herman F. Boon, 2015
It is thanks to Edwin Holmes (H1997) that we know so much about the life of John Lofting, the fou... more It is thanks to Edwin Holmes (H1997) that we know so much about the life of John Lofting, the founder of the brass thimble industry in England. However, some questions were not solved satisfactorily in his writings. Now new information has become available about Lofting's origin, the way he acquired his know-how relating to thimble production and the difference between his and the Dutch casting process.
Herman F. Boon, 2022
De Lijkwade van Turijn
Dat de lijkwade die in Turijn bewaard wordt om het dode lichaam van Jezus... more De Lijkwade van Turijn
Dat de lijkwade die in Turijn bewaard wordt om het dode lichaam van Jezus gewikkeld is geweest, is uitvoerig bewezen. De overeenkomsten met de beschrijvingen in de Bijbel zijn overvloedig. De afdruk van het lichaam in negatief moet gevormd zijn door koppeling van gasvormige uitwasemingsproducten van het lijk met stijfselachtige stoffen op de oppervlakte van het linnen en daarop volgende reacties. Er is geen reden om aan te nemen dat bij Jezus= verrijzenis onverklaarbare flitsen van licht of andere straling zouden zijn opgetreden. De gedetailleerde afbeelding is mogelijk geworden door de was en droogmethode bij de productie van de doek en door de beperkte duur van blootstelling aan ontbindingsproducten van het lijk. De kruisdood van Jezus heeft plaatsgehad zoals in de Bijbel beschreven en de ontkenning ervan in de Koran toont de leugenachtigheid van dat boek aan. De opstanding van Jezus maakte een eind aan de eerste koppelingsreactie en fixeerde de afbeelding.
Herman F Boon, 2024
The Shroud of Turin
Image created by chemical reactions
Herman F. Boon
There is extensive evi... more The Shroud of Turin
Image created by chemical reactions
Herman F. Boon
There is extensive evidence that the shroud preserved at Turin was wrapped around the dead body of Jesus. The parallels with the descriptions in the Bible are abundant. The image of the body in negative must have been formed by the coupling of gaseous exhalations from the corpse with starchy substances on the surface of the linen and subsequent reactions. There is no reason to suppose that unexplained flashes of light or other radiation occurred at the time of Jesus' resurrection. The detailed image was made possible by the washing and drying method in the production of the cloth and by the limited duration of exposure to the decomposition products of the corpse. The crucifixion of Jesus took place as described in the Bible, and its denial in the Koran shows the falsehood of that book. The resurrection of Jesus terminated the first coupling reaction and fixed the image.
Thesis Chapters by Herman F Boon
Double Dissertation, 2008
Summary
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Papers by Herman F Boon
Dat de lijkwade die in Turijn bewaard wordt om het dode lichaam van Jezus gewikkeld is geweest, is uitvoerig bewezen. De overeenkomsten met de beschrijvingen in de Bijbel zijn overvloedig. De afdruk van het lichaam in negatief moet gevormd zijn door koppeling van gasvormige uitwasemingsproducten van het lijk met stijfselachtige stoffen op de oppervlakte van het linnen en daarop volgende reacties. Er is geen reden om aan te nemen dat bij Jezus= verrijzenis onverklaarbare flitsen van licht of andere straling zouden zijn opgetreden. De gedetailleerde afbeelding is mogelijk geworden door de was en droogmethode bij de productie van de doek en door de beperkte duur van blootstelling aan ontbindingsproducten van het lijk. De kruisdood van Jezus heeft plaatsgehad zoals in de Bijbel beschreven en de ontkenning ervan in de Koran toont de leugenachtigheid van dat boek aan. De opstanding van Jezus maakte een eind aan de eerste koppelingsreactie en fixeerde de afbeelding.
Image created by chemical reactions
Herman F. Boon
There is extensive evidence that the shroud preserved at Turin was wrapped around the dead body of Jesus. The parallels with the descriptions in the Bible are abundant. The image of the body in negative must have been formed by the coupling of gaseous exhalations from the corpse with starchy substances on the surface of the linen and subsequent reactions. There is no reason to suppose that unexplained flashes of light or other radiation occurred at the time of Jesus' resurrection. The detailed image was made possible by the washing and drying method in the production of the cloth and by the limited duration of exposure to the decomposition products of the corpse. The crucifixion of Jesus took place as described in the Bible, and its denial in the Koran shows the falsehood of that book. The resurrection of Jesus terminated the first coupling reaction and fixed the image.
Thesis Chapters by Herman F Boon
Dat de lijkwade die in Turijn bewaard wordt om het dode lichaam van Jezus gewikkeld is geweest, is uitvoerig bewezen. De overeenkomsten met de beschrijvingen in de Bijbel zijn overvloedig. De afdruk van het lichaam in negatief moet gevormd zijn door koppeling van gasvormige uitwasemingsproducten van het lijk met stijfselachtige stoffen op de oppervlakte van het linnen en daarop volgende reacties. Er is geen reden om aan te nemen dat bij Jezus= verrijzenis onverklaarbare flitsen van licht of andere straling zouden zijn opgetreden. De gedetailleerde afbeelding is mogelijk geworden door de was en droogmethode bij de productie van de doek en door de beperkte duur van blootstelling aan ontbindingsproducten van het lijk. De kruisdood van Jezus heeft plaatsgehad zoals in de Bijbel beschreven en de ontkenning ervan in de Koran toont de leugenachtigheid van dat boek aan. De opstanding van Jezus maakte een eind aan de eerste koppelingsreactie en fixeerde de afbeelding.
Image created by chemical reactions
Herman F. Boon
There is extensive evidence that the shroud preserved at Turin was wrapped around the dead body of Jesus. The parallels with the descriptions in the Bible are abundant. The image of the body in negative must have been formed by the coupling of gaseous exhalations from the corpse with starchy substances on the surface of the linen and subsequent reactions. There is no reason to suppose that unexplained flashes of light or other radiation occurred at the time of Jesus' resurrection. The detailed image was made possible by the washing and drying method in the production of the cloth and by the limited duration of exposure to the decomposition products of the corpse. The crucifixion of Jesus took place as described in the Bible, and its denial in the Koran shows the falsehood of that book. The resurrection of Jesus terminated the first coupling reaction and fixed the image.