Die vierte Dimension : Mathematik und Wirklichkeit ; Hörernotizen von Vorträgen über den mehrdimensionalen Raum und von Fragenbeantwortungen zu mathematischen Themen ; sechs zusammenhängende Vorträge, gehalten in Berlin vom 24. März bi [engel-34895]

Die vierte Dimension : Mathematik und Wirklichkeit ; Hörernotizen von Vorträgen über den mehrdimensionalen Raum und von Fragenbeantwortungen zu mathematischen Themen ; sechs zusammenhängende Vorträge, gehalten in Berlin vom 24. März bi [engel-34895]

Marsoni

M251S

$42.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Die vierte Dimension : Mathematik und Wirklichkeit ; Hörernotizen von Vorträgen über den mehrdimensionalen Raum und von Fragenbeantwortungen zu mathematischen Themen ; sechs zusammenhängende Vorträge, gehalten in Berlin vom 24. März bi [engel-34895]Erhaltungszustand: Lediglich ca. 8 Seiten eines Vortrages und der Fragenbeantwortungen mit Unterstreichungen und Markierungen mit Buntstift. GA Nr. auf Unterschnitt notiert. Ansonsten Zustand sehr gut. von Rudolf Steiner

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I used this in a red hanging hummingbird feeder on a second-floor shaded balcony. The feeder had only been up a short time, and the nectar was accepted quickly. I observed hummingbirds visiting, perching, and drinking from the active lower tiers, so the product clearly did not discourage feeding. What I like most is the convenience. It is ready to pour, clear, and does not require mixing sugar and water. I also appreciate that it is not dyed red. The feeder itself provides enough red visual attraction, so colored liquid is not necessary. For a small balcony feeder, I only needed to fill the reservoirs about halfway, which helped keep the nectar fresh and reduced waste. A few practical notes: I still treat this like any hummingbird nectar and replace it regularly rather than letting it sit for many days. Even in shaded, mild weather, I would rather keep the feeder clean and fresh. The bottle should also be stored properly after opening. Overall, this is a good option if you want a simple ready-to-use nectar without mixing your own. Homemade sugar water is cheaper, but this is convenient, clean-looking, and in my case the hummingbirds used it. I would recommend it for someone who wants an easy pour-and-fill option, especially for a smaller feeder or balcony setup.

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Reviewed in the United States on May 13, 2026

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Jen and Kelly Roaming with the Allens

Draper, US

★★★★★ 5

Hummingbirds love it… ants do too 🐦🐜

Size: 64 Fl Oz (Pack of 1), Style: 64 oz Ready To Use

This nectar definitely does what it’s supposed to do — the hummingbirds found it fast and keep coming back, which is exactly what I wanted. It’s easy to use and convenient compared to mixing your own. The only downside is that ants seem to love it just as much as the birds. If you’re using this, I’d definitely recommend pairing it with an ant moat or being mindful of where you hang your feeder. Overall, it works great and brings in plenty of hummingbirds — just be prepared to outsmart a few tiny freeloaders along the way.

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Reviewed in the United States on April 29, 2026

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L. Secrist

Phoenix, US

★★★★★ 5

Loved by the birds

Size: 64 Fl Oz (Pack of 1), Style: 64 oz Ready To Use

Easy to pour and the birds love it. I keep ordering this per the hummingbird's instructions!

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Reviewed in the United States on May 12, 2026

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mari

Los Angeles, US

★★★★★ 5

Soft, Luxurious & Perfect for Hair and Skin!

Size: Queen (20" X 30"), Color: 11 - Light Turquoise, Number of Items: 2, Size: Queen (20" X 30"), Color: 11 - Light Turquoise, Number of Items: 2

These satin pillowcases are honestly amazing. The material feels super soft, smooth, and cooling on the skin, and they make my bed look so elegant and luxurious. I bought them mainly to help protect my hair from frizz and dryness, They’re also very comfortable to sleep on and don’t feel cheap at all. The color is beautiful in person, exactly like the photos on Amazon. I washed them already and they still kept their softness and shine. Definitely worth the purchase for the price I would 100% buy again and recommend to anyone looking for cute, comfortable satin pillowcases.”

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Reviewed in the United States on May 13, 2026

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Shea

Louisville, US

★★★★★ 5

Budget friendly satin pillowcase

Size: Standard (20" X 26"), Color: 18 - Lavender, Number of Items: 2

This satin pillowcase is a great budget-friendly option! While it’s not quite as luxurious as my Blissy pillowcase, it still does a really nice job—especially for the price. It has that smooth, silky feel that helps reduce hair frizz and feels gentle on the skin. It’s also easy to wash and holds up well, which is perfect for everyday use. I especially love using these for the kids—they get the benefits of a softer pillowcase without worrying about ruining a more expensive one. Overall, it’s a solid, affordable alternative that still feels nice and does the job. Great value and perfect for families!

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Reviewed in the United States on April 22, 2026