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Description
Jenaer Jahrbuch zur Technik- und Industriegeschichte 2010, Band 13Der 13. Band des gut eingefhrten Jahrbuchs fr Technikgeschichte bringt wieder viel aus der Zeit der glorreichen Jenaer Industrie vergangener Jahre: Die Geschichte der Polarisationsmikroskope, Otto Eppensteins revolutionre Erfindung eines Messgertes fr groe Lngen, sowie einen Bericht ber die Geschichte der Entdeckung zahlreicher Planetoiden mit dem weltgrten Schmidt Teleskop in Tautenburg bei Jena. Weitere Aufstze betreffen den Nachweis schwchster
Der 13. Band des gut eingeführten Jahrbuchs für Technikgeschichte bringt wieder viel aus der Zeit der glorreichen Jenaer Industrie vergangener Jahre: Die Geschichte der Polarisationsmikroskope, Otto Eppensteins revolutionäre Erfindung eines Messgerätes für große Längen, sowie einen Bericht über die Geschichte der Entdeckung zahlreicher Planetoiden mit dem weltgrößten Schmidt-Teleskop in Tautenburg bei Jena. Weitere Aufsätze betreffen den Nachweis schwächster Lichtquellen in der Astronomie, Konstruktionsprobleme besonderer Schwierigkeit, die Geschichte der Glocken in Jena, Apolda und Umgebung, die Versuche in Brandenburg optisches Glas zu erschmelzen und neue Erkenntnisse über die Geschichte der Zeissschen Kleinplanetarien. Ferner gibt es einen Aufsatz über Entwicklungen zur ophthalmologischen Technik in der Schweiz und einen spannenden Bericht über Versuche zur Aufklärung der gewaltigen Festigkeit von Spinnenfäden in einem Jenaer AkademieinstitutShipping Notes
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4.7 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Durable, affordable, definitely buy it
Color: Purple
This fits so comfortably in my hand and I find that the layout of the clicker buttons is more efficient for me than a normal mouse. Tbh I don't use all of the functions but I know she's got more than I utilize. Moves smooth. For someone who has hand mobility issues or injuries (maybe even carpal tunnel?), this might be a better alternative than a normal computer mouse. It's good quality, durable, and I love the color options, I got purple/green with yellow. Super cute and worth the price. My husband got a $100 ergonomic mouse but I was not willing to pay that hefty price. 🤷🏻♀️
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Happy with them
I'm putting up shelves around my bed for my books, and so far, the first shelf is holding nicely with these brackets. They seem pretty sturdy and were easy to install with the screws and anchors that came with it. I measured out where i wanted the brackets on the board and then screwed them to it. I then held it against the wall and used a level to make sure it was level, then put a screw in the middle bracket to hold it level while i marked the rest of the screw holes. I did this all by myself, but it would've been a lot easier to do with two people. I plan to buy more and put up more shelves
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Reviewed in the United States on September 3, 2024
★★★★★ 5
Nice & Sturdy
Got these for shelves in my garage. Nice and sturdy, a bit heavy but was exactly what I was looking for. Shipped fast
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Reviewed in the United States on September 25, 2025
★★★★★ 5
Fantastic Product
I bought these hangers to mount my speakers. They are heavy duty, has a curl at the end to keep the speakers from falling off, and I was able to mount them and have clearance underneath. Awesome!!
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Reviewed in the United States on November 7, 2024
★★★★★ 4
Does it's purpose with style
We used these in our pantry and dining room for shelves and they turned out well. The only reason they are hard to install is because of the design (which is very nice) so it is worth it. It just takes time when you you are hanging the shelves, to do it correctly. While they can hold a lot, we realized that a bunch of cans or jars cannot go on these shelves. Luckily we had another option for heavy items (Example: We had about 40ish pounds of cans/jars on a 1x12 board that is 33 inches long with 2 of these brackets...and it was too much). If you do not need to hold a lot of weight, these shelves are a for sure, for the price and quality. If you NEED they for something heavy, then you probably will have to go with something more practical from a hardware store. We LOVE them for our pantry!
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Reviewed in the United States on March 28, 2020