reverse photos on Flickr

It's actually somewhat common in the western U.S. for sand to blow from arid valley floors and form dunes in pockets of mountain ranges. However, the San Luis Valley is vast, and a large part of it is a closed basin where water has pooled for thousands of years, leaving extensive sand deposits behind.

When sand arrives in this low curve of the Sangre de Cristo Mountains, it starts to be subject to opposing mountain storm winds. This battle between winds from the southwest and the northeast causes the dunes to grow vertically, stacking dune ridge upon dune ridge.

For scale, look closely to see four hikers near the top center of this photo. These dunes are taller than most city skyscraper buildings!

Reverse lens by Happy Times Photography

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After seeing on article on ciao_chao's blog (Illucisco Photography) we've been trying our hand at reversing lenses for macro photography. This was taken with a 50mm prime on a f/4 aperture.

Reverse glass paintings by persian painting

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زوج جوان، نقاشی پشت شیشه ای معکوس، سده ۱۹ ترسایی، ۳۵ در ۳۹.۵ سانتیمتر

Reverse glass paintings: a Persian maiden and an officer with a Persian maiden, Persia,19th century

glass painted in reverse, rectangular painting with an officer and maiden painted with gold ornamental details, in a wooden frame painted with polychrome floral borders, old collector's numbers written to reverse

39.5 by 35cm.

Reverse_VW by Vintage Cars & People

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In den Bergen, Juni 1956 – in the mountainside, June 1856

Reverse cowgirl by a___k

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Les gens sont tellement cliché avec leurs chevaux blancs et leurs vagues etc.

REVERSE ENGINEERING by Peter Dovey

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614I 0830 Lichfield Tv C E Sidings to Severn Tunnel Junction ,passes by with some workers filming on the I Phone in the back.

Reverse Universe by Csaba Molnar

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reverse. by chris spira

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shanghai street.

Reverse Fly by Naomi Bradford

Reverse of Tiger by Wooway1

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Reverse Cowgirl by Dark Gnome Von Desvib

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Reverse Cowgirl on the playa.

Reverse silhouette by Bill Dolak

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Oval Beach, Saugatuck Harbor Natural Area, Saugatuck, Michigan.

Olympus E-PL1 (full spectrum) + 590nm filter. Conversion to B&W with Nik Silver Efex.

‘reverse curve’ by Jody Wells

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American Avocet AMAV (Recurvirostra Americana)

female (by extent of curve)

a slough near

Pakowki Lake

Alberta

i was not aware how much toe webbing the AMAV can have.(Something which neither Sibley’s nor Stokes seem to indicate as far as i could see :)

Click on image to enlarge for more detailed view

Miram -- Reverse Albireo by Richard Orr

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Miram (Eta Persei) has been referred to as the “Reverse Albireo”. Both stars, Albireo and Miram, have bright gold primary stars with blue secondary companions. If you look at Albireo and then Miram, you will notice that the location of the “blue star” switches from one side of the gold star to the other.

Miram gold (Eta Persei A) is a huge monster star with a diameter approximately equal to Earth’s orbit. It shines at 13,000 times that of our sun.

Note the nice double-star (magnitudes 10 & 10.5) next to Miram. In the past this pair was thought to be companions to Miram along with a couple of the other nearby fainter stars. These stars are now believed not be part of the Eta Persei system but due to chance alignment.

To see additional astronomy drawings visit: www.orrastrodrawing.com

Reverse Cowgirl ;-) by Sarah_Ginn

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Superimposed image - model (Charlie) was shot in empty room and background added

This image is the exclusive property of Sarah Ginn. Images may not be reproduced, copied, stored, downloaded or altered in any way without permission.

Loved @baloji and the amazing reverse-playing guitarist Dizzy Mandjeku @thegreatescape #highlightoftge17 #tge17 #ifttt by Richard Gray

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www.instagram.com/p/BUcXvE9B6km/

reverse by Valeria Calfa

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baby-bear and his little girl-doll.

pencil, pen tablet, illustrator & photoshop.

Reverse engineering by Andrea Nicolini

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L'ingegneria inversa (spesso si usa il termine inglese reverse engineering) è il processo di prendere qualcosa (un dispositivo, un componente elettrico, un programma software, ecc.) e analizzarne in dettaglio il funzionamento, solitamente con l'intenzione di costruire un nuovo dispositivo o programma che faccia la stessa cosa senza in realtà copiare niente dall'originale; ovvero realizzare un secondo dispositivo, componente o programma in grado di interfacciarsi con il primo [1].

É il processo di analisi di un sistema software esistente per creare una sua rappresentazione ad alto livello di astrazione.

In senso stretto l'attività di ingegneria inversa consiste nella comprensione del funzionamento e della realizzazione di un dispositivo fisico o virtuale al fine di produrre il nuovo dispositivo, mentre il termine reingegnerizzazione comprende entrambe le attività, ovvero quella di analisi e quella di ridisegno.

Reverse Cowgirl by Dark Gnome Von Desvib