Archive for the ‘Nature’ Category

Signal From a Galaxy Far Away? Or Merely “Oil Film Interference”? You Decide.

Wednesday, December 23rd, 2015

.

The time: December 22, 2015, 10:48 am. The setting: Intersection of Pennsylvania Ave. and 18th Street NW, Washington, DC.

.

Intersection of Pennsylvania Ave. and 18th Street, NW, 12-22-2015, 10:48AM

.

In the wake of a light rain shower, two spots of colorful efflorescence appear on the surface of the asphalt.

.

Oil blooms on wet street

.

Are these not astronomical images, the one suggesting a spiral galaxy and the other an eclipsed star?

.

Oil stain on wet street

.

Oil stain on wet street

.

More about oil blooms on wet streets, here. The phenomenon–known in physics as oil film interference–is exhaustively explained here. Check out this brilliant Instagram shot of what looks like a furry jellyfish floating through space.

For a previous post of mine discussing another instance when mother nature displays her art on man’s concrete, click here.

Signs in the Neighborhood

Wednesday, January 7th, 2015

.

Yesterday’s drifting snow in Glover Park turned a cautionary sign into really bad advice:

Cleaned up, the sign reveals its original intent (click on image to enlarge):

.

For additional information about these safety signs, go to http://drivelikeyourkidslivehere.com/.

Several blocks to the south, in Georgetown, someone turned their mini-dumster into a four-sided plea:

.

Osage Orange Tree Drops Its Fruit

Wednesday, October 29th, 2014

.

Along Parrott Ropewalk in Georgetown’s Montrose Park there is an old Osage Orange tree (maclura pomifera). Early this morning I stopped to spend a few minutes photographing its large yield of fruit.

.

.

.

.

.

C’est le pigeon, Joseph

Wednesday, September 10th, 2014

.

On a lunchtime walk today I saw a landscape crew placing fall mums in the sidewalk tree boxes. Arrested by the color, I raised my iPhone and shot several photos. Midway through the series I remember sensing a disruption to the scene. There was the sound of fluttering wings and then a sudden streak from left to right on the screen, gone in a flash. Only later while looking through all the photos did I see what the camera had caught.

The scene:

.

.

The photobomber:

.

An Elm Through the Lens of Google

Friday, June 6th, 2014

.

Google Map’s “Street View” can show you scenes of life in distant lands, as here and here. But it can also give you a new perspective on what’s to be seen right outside your own front door, as in this view of the maturing crown of an elm tree I planted many years ago.

.

(c) 2014 Google Image Date: 2011

.

Early December Photos

Saturday, December 14th, 2013

.

Trunk of an aged sycamore tree, outside Rosedale Conservancy:

.

.

Autumn leaves, viewed from an office window overlooking 19th Street, NW:

.

.

The second of three morning yawns:

.

.

Ginkgo leaves on a city sidewalk

Friday, November 22nd, 2013

On my street the ginkgo trees — those living fossils — have dropped their leaves. An unstaged photo taken Monday morning after an overnight shower:

.

.

Spring Wildflowers in Glover Park

Saturday, April 20th, 2013

.

Sunday, April 14, 2013, was a fine Spring day in Washington’s Glover Park. There, in a stretch of fields bordered by Foundry Creek and a north/south hiking trail, I found these views.

.

.

.

.

Rain on the Roof of a New Car

Saturday, April 6th, 2013

.

.

Contrails over Washington, DC

Friday, January 4th, 2013

A photo of contrails above Washington DC, in the clear morning air of January 3rd, 2013. You can see a new vapor trail being formed by a jet in the lower left quadrant, while in the upper left corner a bird tries to horn in on the action (click on photo for enlargement). This view is toward the East North East.

.

.