Draft:Heinz Walz

Review waiting, please be patient.

This may take 8 weeks or more, since drafts are reviewed in no specific order. There are 1,818 pending submissions waiting for review.

If the submission is accepted, then this page will be moved into the article space.
If the submission is declined, then the reason will be posted here.
In the meantime, you can continue to improve this submission by editing normally.

Where to get help

If you need help editing or submitting your draft, please ask us a question at the AfC Help Desk or get live help from experienced editors. These venues are only for help with editing and the submission process, not to get reviews.
If you need feedback on your draft, or if the review is taking a lot of time, you can try asking for help on the talk page of a relevant WikiProject. Some WikiProjects are more active than others so a speedy reply is not guaranteed.

How to improve a draft

Wikipedia:Contributing to Wikipedia – a basic overview on how to edit Wikipedia.
Help:Wikitext – how to use the markup
Help:Referencing for beginners – how to include references
Wikipedia:Article development – how to develop your article
Wikipedia:Writing better articles – how to improve your article
Wikipedia:Verifiability – make sure your article includes reliable third-party sources

You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article.

Improving your odds of a speedy review

To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags.

Add tags to your draft

Editor resources

Easy tools: Citation bot (help) | Advanced: Fix bare URLs

Reviewer tools

Instructions · What links here · Heinz Walz (talk: + · bio) · (log) · Copyvios report · reFill · Citation Bot · (Search: Google, Wikipedia) · Submitted 49 days ago by DJHENDRIX (talk: D · +) · Last edited 21 days ago by RangersRus

Comment: Most of the sources are not independent and written by the subject himself. Can you find secondary independent reliable sources with significant coverage on the subject? RangersRus (talk) 23:33, 3 December 2024 (UTC)

Heinz Walz (* October 26, 1932 in Nuremberg - † October 21, 2015 in Effeltrich) was a German inventor and the founder of the Heinz Walz GmbH. He advanced the measurement of photosynthetic CO₂ uptake by introducing his patented concept of flow-through measuring chambers combined with differential CO₂ determination.^[1] As entrepreneur, he made the pulse amplitude-modulated (PAM) chlorophyll fluorescence technique.^[2]^[3] available for photosynthesis research.

Life and education

Heinz Walz was born on 26. October 1932 in the city of Nuremberg, where he also grew up. Following high school education, he completed an apprenticeship in electrical engineering in April 1951. Subsequently, he joined the Siemens AG and moved to the development laboratory associated with the central management in 1954. Alongside his regular job, Heinz Walz continued his education to be awarded the degree of master craftsmen in May 1957, and to earn the certificate of an electrical engineer in April 1962.

Inventor

At Siemens, Heinz Walz developed a high profile in constructing specialized measuring devices and control systems; he was appointed to the head of this research laboratory. His successful work resulted in numerous patented innovations.^[1].^[4]^[5]^[6]^[7] Heinz Walz put a particular focus on Peltier elements. His Peltier-cooled boxes were employed when the University Hospital of Erlangen prepared for their kidney transplantation, in 1966/1967. Using Peltier technology, Heinz Walz devised gas exchange systems to measure with high accuracy the photosynthetic carbon fixation by plants. His gas exchange machines became the gold standard for quantifying photosynthesis and a fully automated setup for field studies was patented in 1969^[1]

Entrepreneur

In 1972, Heinz Walz started his firm as a one-man enterprise. His chief start-up capital was a patented concept for measuring photosynthetic CO₂ uptake by plants^[1]. Its essential characteristics were a flow-through measuring chamber and the evaluation of the CO₂ difference between the gas passing through the measuring chamber and the gas of a reference line. In short, Heinz Walz had the design of today's high-performance gas exchange machines in mind. The convincing measuring principle let the company grow. At the same time, the number of scientific partnerships with Heinz Walz increased. The original cooperation between Prof. Dr. Werner Koch of the Forest Botanical Institute in Munich and Heinz Walz was followed by numerous partnerships with German and international researchers. These successful collaborations are documented in publications which were coauthored by Heinz Walz^[8]^[9]^[10]^[11]^[12] In 1985, the Heinz Walz GmbH expanded its product range considerably. In cooperation with Dr. Ulrich Schreiber of the University of Würzburg he manufactured devices for pulse-amplitude modulated (PAM) chlorophyll fluorescence detection as another way to measure photosynthesis^[2]^[3]. Nowadays, PAM fluorometers are indispensable tools for photosynthesis research.

Honors

1983 State Award of the government of the State of Bavaria for excellent craftsmanship.

1990 Professor-Adalbert-Seifriz award for outstanding cooperation between craftsmanship and science (together with Prof. O. L. Lange).

References

^ ^a ^b ^c ^d Klein E, Koch W, Walz H (1969) Device for regulating and determining changes of a CO2 content in a climatic gas-exchange chamber. United States Patent Office 3,613,308. https://patents.google.com/patent/US3613308
^ ^a ^b Schreiber U, Schliwa U (1986) Fluorometer auf Impulsbasis. Deutsches Patentamt, DE 35 18 527 A1
^ ^a ^b [Schreiber U, Schliwa U, Bilger W (1986) Continuous recording of photochemical and non-photochemical chlorophyll fluorescence quenching with a new type of modulation fluorometer. Photosynthesis Research 10: 51–62, https://doi.org/10.1007/BF00024185]
^ Roth H, Walz H (1970) Evaporimeter utilizing variation in capacitance to indicate liquid level. United States Patent Office 3,540,277. https://patentimages.storage.googleapis.com/d7/35/4c/814a256a22f66f/US3540277.pdf
^ [Rupprecht J, Walz H (1969) Thermoelectric couple with soft solder electrically connecting semi-conductors and method of making same. United States Patent Office US-3449173-A]
^ Walz H (1965) Method of producing thermobatteries. United States Patent Office 3,416,223. [https://patentimages.storage.googleapis.com/d7/35/4c/814a256a22f66f/US3540277.pdf US3540277.pdf
^ [Walz H (1967) Device for varying the blood temperature. United States Patent Office 3,399,536 US-3399536-A ]
^ Koch W, Walz H (1967) Kleinklimaanlage zur Messung des pflanzlichen Gaswechsels. Ein neuartiges Verfahren der Feuchteregelung und Transpirationsmessung. Naturwissenschaften 54: 321–322. https://doi.org/10.1007/BF00640623
^ Lange OL, Gebel J, Schulze ED, Walz H (1985) Eine Methode zur raschen Charakterisierung der photosynthetischen Leistungsfähigkeit von Bäumen unter Freilandbedingungen—Anwendung zur Analyse «neuartiger Waldschäden" bei der Fichte. Forstwissenschaftliches Centralblatt 104, 186–198, https://doi.org/10.1007/BF027407145
^ [Lange OL, Reichenberger H, Walz H (1997) Continuous Monitoring of CO2 Exchange of Lichens in the Field: Short-Term Enclosure with an Automatically Operating Cuvette. The Lichenologist 29: 259-274, https://doi.org/10.1006/lich.1996.0076)
^ [Lange OL, Tenhunen JD, Harley P, Walz H (1985) Method for field measurements of CO2-exchange. The Diurnal Changes in Net Photosynthesis and Photosynthetic Capacity of Lichens under Mediterranean Climatic Conditions. In: Brown, D.H. (ed) Lichen Physiology and Cell Biology. Springer, Boston, MA, pp 23 39. https://doi.org/10.1007/978-1-4613-2527-7_3 ]
^ Schulze ED, Hall AE, Lange OL, Walz H (1982) A portable steady-state porometer for measuring the carbon dioxide and water vapour exchanges of leaves under natural conditions. Oecologia 53: 141–145, https://doi.org/10.1007/BF00545656

[Klein/Koch/Walz-1] Klein E, Koch W, Walz H (1969) Device for regulating and determining changes of a CO2 content in a climatic gas-exchange chamber. United States Patent Office 3,613,308. https://patents.google.com/patent/US3613308

[Schreiber_Patent_1986-2] Schreiber U, Schliwa U (1986) Fluorometer auf Impulsbasis. Deutsches Patentamt, DE 35 18 527 A1

[Schreiber_1986-3] [Schreiber U, Schliwa U, Bilger W (1986) Continuous recording of photochemical and non-photochemical chlorophyll fluorescence quenching with a new type of modulation fluorometer. Photosynthesis Research 10: 51–62, https://doi.org/10.1007/BF00024185]

[4] Roth H, Walz H (1970) Evaporimeter utilizing variation in capacitance to indicate liquid level. United States Patent Office 3,540,277. https://patentimages.storage.googleapis.com/d7/35/4c/814a256a22f66f/US3540277.pdf

[5] [Rupprecht J, Walz H (1969) Thermoelectric couple with soft solder electrically connecting semi-conductors and method of making same. United States Patent Office US-3449173-A]

[6] Walz H (1965) Method of producing thermobatteries. United States Patent Office 3,416,223. [https://patentimages.storage.googleapis.com/d7/35/4c/814a256a22f66f/US3540277.pdf US3540277.pdf

[7] [Walz H (1967) Device for varying the blood temperature. United States Patent Office 3,399,536 US-3399536-A ]

[8] Koch W, Walz H (1967) Kleinklimaanlage zur Messung des pflanzlichen Gaswechsels. Ein neuartiges Verfahren der Feuchteregelung und Transpirationsmessung. Naturwissenschaften 54: 321–322. https://doi.org/10.1007/BF00640623

[9] Lange OL, Gebel J, Schulze ED, Walz H (1985) Eine Methode zur raschen Charakterisierung der photosynthetischen Leistungsfähigkeit von Bäumen unter Freilandbedingungen—Anwendung zur Analyse «neuartiger Waldschäden" bei der Fichte. Forstwissenschaftliches Centralblatt 104, 186–198, https://doi.org/10.1007/BF027407145

[10] [Lange OL, Reichenberger H, Walz H (1997) Continuous Monitoring of CO2 Exchange of Lichens in the Field: Short-Term Enclosure with an Automatically Operating Cuvette. The Lichenologist 29: 259-274, https://doi.org/10.1006/lich.1996.0076)

[11] [Lange OL, Tenhunen JD, Harley P, Walz H (1985) Method for field measurements of CO2-exchange. The Diurnal Changes in Net Photosynthesis and Photosynthetic Capacity of Lichens under Mediterranean Climatic Conditions. In: Brown, D.H. (ed) Lichen Physiology and Cell Biology. Springer, Boston, MA, pp 23 39. https://doi.org/10.1007/978-1-4613-2527-7_3 ]

[12] Schulze ED, Hall AE, Lange OL, Walz H (1982) A portable steady-state porometer for measuring the carbon dioxide and water vapour exchanges of leaves under natural conditions. Oecologia 53: 141–145, https://doi.org/10.1007/BF00545656

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]