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Ruby Falls, located 1,120 feet underground inside Lookout Mountain with a height of 145 feet, is one of the tallest underground waterfalls in the world.
The falls were discovered by Leo Lambert in 1928 and named them after his wife, Ruby. Earlier this year, the cave was closed for 3 days after heavy rainfall flooded a portion of the caves.
If you haven't visited here, you need it. It's quite the experience.
Another Ruby-throated shot from my backyard during the week. Ended up chopping out most of the flower in this image but I loved this pose too much not to process it. This image was shot in natural lighting. So far this year, the males have been MUCH more tolerate of me then the females have.
© Joshua Clark, All Rights Reserved.
This image is the property of the photographer and cannot be used, printed, downloaded, or reproduced in any way for either personal or commercial use without prior written consent of the photographer.
image by Team Macho
2008 / May 15th
Ruby Mag Special Issue
this month Ruby has a different issue. all the artists included in issues 1 to 12 were invited to send their newer works and 15 were selected to be part of a special compilation. the chosen artists were: mark rubenstein, maureen gubia, ding ren, takashi iwasaki, riikka sormunen, wendy walgate, celine clanet, michael deforge, betsy davis, jan von holleben, matthew fyeld, andrew laumann, ronnie rascal (donal dixon), frederik heyman and team macho.
The Ruby Mountain Interagency Hotshot Crew, Bureau of Land Management, were assigned to several large fires across the country in 2020. Photo by BLM
Notice the spider web (or is it a sticky situation) streaming from the beak of this female Ruby-throated hummingbird to the lily's stigma. They use spider web as "glue" to hold their nesting material together.
Experience is never limited, and it is never complete, it is an immense sensibility, a kind of spider web of the finest silken threads suspended in the chamber of consciousness, and catching every air-borne particle in its tissue". ~Henry James
Cool Facts From: www.hummingbirds.net
The walnut-sized nest, built by the female, is constructed on a foundation of bud scales attached to a tree limb with spider silk; lichens camouflage the outside, and the inside is lined with dandelion, cattail, or thistle down. The nest will stretch to contain the growing nestlings, and may sometimes be reused (rebuilt) the following year.
The rain stopped for a moment this afternoon and the birds noticed. Birds singing everywhere. This Ruby-throated Hummingbird (Archilochus colubris) female hovered around the feeder and rested a few times on a nearby twig.
The light was still poor: ISO 1000 and f/10 only gave 1/60 sec exposure. Handheld, no flash, 500 mm focal length, cropped by about 40 %.
This image is the exclusive property of its author, Roger P. Kirchen, and is protected by Canadian and international copyright laws. The use of this image, in whole or in part, for any purpose other than the private online viewing, including, but not limited to copying, reproduction, publication (including web sites and blogs), "hotlinking", storage in a retrieval system (other than an internet browser as part of its normal operation), manipulation and alteration (digital or otherwise), transmission in any form or by any means (such as, but not limited to: electronic, mechanical, photocopying, photographing, recording) is expressly prohibited without the prior written permission by Roger P. Kirchen.
All artistic and moral rights of the author are hereby asserted. Copyright © by Roger P. Kirchen. All Rights Reserved.
IMG68484
In the Northeast, our only breeding hummingbird is the Ruby-throated Hummingbird. Their nest is hard to find (it's a little bigger than a quarter), but is a sight to behold, made entirely of spiderweb encrusted with flakes of lichen -- a masterpiece of engineering and design! For safety from predators, they seem to favor building their nests on branches overhanging water.
Credit: Michael Schramm/USFWS
Ruby Crowned Kinglet. Scientific name: Regulus calendula
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🌳 See also www.flickr.com/clixofnature🐦
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Kinglets are tiny insectivores that actively forage for insect and spider eggs on the undersides of foliage. They weigh less than an ounce and are among the smallest of songbirds. They often hover in front of a branch, gleaning food from its tips and undersides. Kinglets often flick their wings as they move about.
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You rarely see the "ruby" color on their little heads, so I was tickled when I got a tiny glimpse of that on this Ruby-crowned Kinglet. Look very closely.
A Ruby-throated Hummingbird photographed in my backyard over the weekend, seen here feeding from a Petunia. First time this summer I have took to my backyard for these guys. Figures when I went out side all the clouds rolled in and chocked out all my light. Other then that, I was fairly happy with my first attempt of the summer.
© Joshua Clark, All Rights Reserved.
This image is the property of the photographer and cannot be used, printed, downloaded, or reproduced in any way for either personal or commercial use without prior written consent of the photographer.
FOV: 6" wide.
This experiment was an attempt to recreate the fluorescence of chromium activated corundum (aka 'ruby'). Aluminum hydroxide was mixed with 1-4 drops of Cr(III) oxide in a basic solution. This was placed on a small amount of aluminum sulfate in an aluminum foil container and a bit of water was added.
The sample was then heated, first with a propane torch until the water was removed and then with a MAPP gas torch until the aluminum sulfate expanded into foam, trapping the aluminum hydroxide which was calcined into aluminum oxide by the torch's flame. (at least that was the plan)
Shown also is a natural ruby from Mysore, India.
See ruby excitation spectrum here (0.03% Cr):
www.northropgrumman.com/BusinessVentures/SYNOPTICS/Produc...
Contains:
Ruby (FL Red >GR,BL/UVa)
Ruby Foam (FL Red >GR,BL/UVabc)
Shown under UVb light.
Key:
WL = White light (halogen + LED)
FL = Fluoresces
PHOS = Phosphorescent
BL = 450nm, GR = 532nm
UVa = 368nm (LW), UVb = 311nm (MW), UVc = 254nm (SW)
'>' = "stimulated by:", '!' = "bright", '~' = "dim"
Ruby2
24 Dec 2016
Series best viewed in Light Box mode using Right and Left arrows to navigate.
Photostream best viewed in Lightbox mode (in the dark).
18 Watt Triple Output UV lamp from Polman Minerals - Way Too Cool UV lamps
Ruby resides on my refrigerator. She is a magnet.....for attention!
She came with a bikini, and some type of pajama/summer outfit.
She loves her new golfing clothes. I told her not to accept any text messages from a man named Tiger!
Merry - Merry Happy - Happy!
Ruby Meadowhawk (Sympetrum rubicundulum)
This one needs to towel off.
Nikon D300 w/105mm Micro Nikkor
1.3sec. f/22 ISO 200
Tripod, Cable Release.
A male Ruby-topaz Hummingbird feeds in the garden near the veranda at Asa Wright Nature Center in Arima, Trinidad. Recorded on 03/07/2016.