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Posts by Stephen J Jenkins

Calligraphy cat by Enoki Toshiyuki - with paw outstretched towards a small bird

Calligraphy cat by Enoki Toshiyuki - with paw outstretched towards a small bird

The she cat

The she cat -
Grown thin
From love and barley.

🐾Matsuo Basho (1644-1694) #BookWormSat
✒️Enoki Toshiyuki

1 week ago 34 8 0 0
Black and white photograph looking up from a low angle toward the ruins of a square castle keep. A stone wall descends toward the viewer along the left of frame, terminating in a round stone tower in the lower-left. The sky is hazy and uniform.

Black and white photograph looking up from a low angle toward the ruins of a square castle keep. A stone wall descends toward the viewer along the left of frame, terminating in a round stone tower in the lower-left. The sky is hazy and uniform.

Corfe Castle. #CastleSaturday #Castles #CorfeCastle #Dorset #Medieval #Architecture #Monochrome #BlackAndWhite #Photography

1 week ago 14 2 0 0
Black and white photograph looking up from a low angle toward the ruins of a square castle keep. A stone wall descends toward the viewer along the left of frame, terminating in a round stone tower in the lower-left. The sky is hazy and uniform.

Black and white photograph looking up from a low angle toward the ruins of a square castle keep. A stone wall descends toward the viewer along the left of frame, terminating in a round stone tower in the lower-left. The sky is hazy and uniform.

Corfe Castle. #CastleSaturday #Castles #CorfeCastle #Dorset #Medieval #Architecture #Monochrome #BlackAndWhite #Photography

1 week ago 14 2 0 0
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a close up of a gollum from the lord of the rings with a very angry look on his face Alt: a close up of a gollum from the lord of the rings with a very angry look on his face

Social media apps as Lord of the Rings characters, a thread:

Twitter: Twitter is Gollum. Began as a normal halfling. Overexposure to evil left it thin and stretched and bitter.

1 week ago 3684 1211 43 162
Photograph of sandy-coloured tiles arranged in a four-fold rotationally symmetric pattern, devoid of mirror or glide symmetry. The repeating motif comprises an eight-pointed star, surrounded by four identical irregular polygons. The finish is matt, and the colouration variable. The eye is mostly drawn to the black lines between the tiles, rather than to the tiles themselves.

Photograph of sandy-coloured tiles arranged in a four-fold rotationally symmetric pattern, devoid of mirror or glide symmetry. The repeating motif comprises an eight-pointed star, surrounded by four identical irregular polygons. The finish is matt, and the colouration variable. The eye is mostly drawn to the black lines between the tiles, rather than to the tiles themselves.

Tiling in the Palace of the Lions (p4 symmetry). #TilesOnTuesday #Tiliing #Alhambra #Granada #Andalucia #Architecture #Symmetry #Photography

2 weeks ago 9 1 0 0
Photograph of sandy-coloured tiles arranged in a four-fold rotationally symmetric pattern, devoid of mirror or glide symmetry. The repeating motif comprises an eight-pointed star, surrounded by four identical irregular polygons. The finish is matt, and the colouration variable. The eye is mostly drawn to the black lines between the tiles, rather than to the tiles themselves.

Photograph of sandy-coloured tiles arranged in a four-fold rotationally symmetric pattern, devoid of mirror or glide symmetry. The repeating motif comprises an eight-pointed star, surrounded by four identical irregular polygons. The finish is matt, and the colouration variable. The eye is mostly drawn to the black lines between the tiles, rather than to the tiles themselves.

Tiling in the Palace of the Lions (p4 symmetry). #TilesOnTuesday #Tiliing #Alhambra #Granada #Andalucia #Architecture #Symmetry #Photography

2 weeks ago 9 1 0 0
Photograph of a baker, dressed in blue-and-white checked shirt and green cap, surveying a tray of uncooked pastries that he will shortly place in an oven. The tray rests on a stone tabletop supported on white-tiled pillars. The bakery is otherwise dark and a little untidy.

Photograph of a baker, dressed in blue-and-white checked shirt and green cap, surveying a tray of uncooked pastries that he will shortly place in an oven. The tray rests on a stone tabletop supported on white-tiled pillars. The bakery is otherwise dark and a little untidy.

Patisserie Bennis Habous, Casablanca. #Baking #Patisserie #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 4 1 0 0
Photograph of a baker, dressed in blue-and-white checked shirt and green cap, surveying a tray of uncooked pastries that he will shortly place in an oven. The tray rests on a stone tabletop supported on white-tiled pillars. The bakery is otherwise dark and a little untidy.

Photograph of a baker, dressed in blue-and-white checked shirt and green cap, surveying a tray of uncooked pastries that he will shortly place in an oven. The tray rests on a stone tabletop supported on white-tiled pillars. The bakery is otherwise dark and a little untidy.

Patisserie Bennis Habous, Casablanca. #Baking #Patisserie #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 4 1 0 0

In light of the conversation about how hard it is to promote your own book: Post a link to buy your book here and I’ll boost it cause you destroyed yourself to get it done, your publisher won’t help you sell it, and you deserve cheers and admiration for your accomplishment.

2 weeks ago 2084 830 483 87
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2 weeks ago 0 0 0 0
Photograph of a book titled Foundations of Surface Science, by Stephen J. Jenkins. It is largely white, except for a false-colour image of a surface in orange and blue in its top half.

Photograph of a book titled Foundations of Surface Science, by Stephen J. Jenkins. It is largely white, except for a false-colour image of a surface in orange and blue in its top half.

Taking the opportunity to promote my contribution to the Oxford Chemistry Primers series: Foundations of Surface Science.

2 weeks ago 10 2 1 0
Photograph of an old and battered Singer sewing machine, sitting on a wooden stool next to a partially plastered brick pillar.

Photograph of an old and battered Singer sewing machine, sitting on a wooden stool next to a partially plastered brick pillar.

Singer on a Stool. #SewingMachine #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 5 1 0 0
Photograph of an old and battered Singer sewing machine, sitting on a wooden stool next to a partially plastered brick pillar.

Photograph of an old and battered Singer sewing machine, sitting on a wooden stool next to a partially plastered brick pillar.

Singer on a Stool. #SewingMachine #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 5 1 0 0
Photograph of an imposing courthouse building, faced in stone and partially whitewashed. It features several prominent towers, capped with distinctive green tiled roofs. At the mid-level of one of these is an ornate balcony, while at the street level of another is a large open archway. A road descends toward the viewer on the mid-right of frame, lined with parked cars. The sky is cloudless and deep blue.

Photograph of an imposing courthouse building, faced in stone and partially whitewashed. It features several prominent towers, capped with distinctive green tiled roofs. At the mid-level of one of these is an ornate balcony, while at the street level of another is a large open archway. A road descends toward the viewer on the mid-right of frame, lined with parked cars. The sky is cloudless and deep blue.

Makhamat al-Pasha, Casablanca. #Courthouse #Architecture #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 4 1 0 0
Photograph of an imposing courthouse building, faced in stone and partially whitewashed. It features several prominent towers, capped with distinctive green tiled roofs. At the mid-level of one of these is an ornate balcony, while at the street level of another is a large open archway. A road descends toward the viewer on the mid-right of frame, lined with parked cars. The sky is cloudless and deep blue.

Photograph of an imposing courthouse building, faced in stone and partially whitewashed. It features several prominent towers, capped with distinctive green tiled roofs. At the mid-level of one of these is an ornate balcony, while at the street level of another is a large open archway. A road descends toward the viewer on the mid-right of frame, lined with parked cars. The sky is cloudless and deep blue.

Makhamat al-Pasha, Casablanca. #Courthouse #Architecture #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 4 1 0 0
Photograph of a courtyard, bedecked with rugs, blankets, and other textiles for sale. At the far end, two archways in a whitewashed wall lead into a dark interior. The scene is otherwise brightly sunlit from a blue sky visible at the top left.

Photograph of a courtyard, bedecked with rugs, blankets, and other textiles for sale. At the far end, two archways in a whitewashed wall lead into a dark interior. The scene is otherwise brightly sunlit from a blue sky visible at the top left.

In the Medina. #QuartierHabous #Casablanca #Textiles #Photography

2 weeks ago 13 3 0 0
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Photograph of a courtyard, bedecked with rugs, blankets, and other textiles for sale. At the far end, two archways in a whitewashed wall lead into a dark interior. The scene is otherwise brightly sunlit from a blue sky visible at the top left.

Photograph of a courtyard, bedecked with rugs, blankets, and other textiles for sale. At the far end, two archways in a whitewashed wall lead into a dark interior. The scene is otherwise brightly sunlit from a blue sky visible at the top left.

In the Medina. #QuartierHabous #Casablanca #Textiles #Photography

2 weeks ago 13 3 0 0
Photograph of a tall quadrangular minaret, framed by an archway against a blue sky. The minaret is built of brick, with copious decorative detailing. Its top is crowned by a cupola from which rises a metal finial punctuated by three spheres of decreasing size.

Photograph of a tall quadrangular minaret, framed by an archway against a blue sky. The minaret is built of brick, with copious decorative detailing. Its top is crowned by a cupola from which rises a metal finial punctuated by three spheres of decreasing size.

The Minaret of Moulay Youssef Mosque, Casablanca. #Mosque #Architecture #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 8 1 0 0
Photograph of a tall quadrangular minaret, framed by an archway against a blue sky. The minaret is built of brick, with copious decorative detailing. Its top is crowned by a cupola from which rises a metal finial punctuated by three spheres of decreasing size.

Photograph of a tall quadrangular minaret, framed by an archway against a blue sky. The minaret is built of brick, with copious decorative detailing. Its top is crowned by a cupola from which rises a metal finial punctuated by three spheres of decreasing size.

The Minaret of Moulay Youssef Mosque, Casablanca. #Mosque #Architecture #QuartierHabous #Casablanca #Morocco #Photography

2 weeks ago 8 1 0 0
Photograph of a streetside planter containing some shrubs and decorated with ceramic tiles. Each tile displays a complex geometric design in white, blue, green, red, and yellow glaze. They are arranged in such a way that a continuation of the pattern would show two-fold rotational symmetry, together with mirror symmetry in two orthogonal orientations.

Photograph of a streetside planter containing some shrubs and decorated with ceramic tiles. Each tile displays a complex geometric design in white, blue, green, red, and yellow glaze. They are arranged in such a way that a continuation of the pattern would show two-fold rotational symmetry, together with mirror symmetry in two orthogonal orientations.

On a Street in Casablanca (p2mm symmetry). #TilesOnTuesday #Tiling #QuartierHabous #Casablanca #Morocco #Symmetry #Photography

3 weeks ago 7 2 0 0
Photograph of a streetside planter containing some shrubs and decorated with ceramic tiles. Each tile displays a complex geometric design in white, blue, green, red, and yellow glaze. They are arranged in such a way that a continuation of the pattern would show two-fold rotational symmetry, together with mirror symmetry in two orthogonal orientations.

Photograph of a streetside planter containing some shrubs and decorated with ceramic tiles. Each tile displays a complex geometric design in white, blue, green, red, and yellow glaze. They are arranged in such a way that a continuation of the pattern would show two-fold rotational symmetry, together with mirror symmetry in two orthogonal orientations.

On a Street in Casablanca (p2mm symmetry). #TilesOnTuesday #Tiling #QuartierHabous #Casablanca #Morocco #Symmetry #Photography

3 weeks ago 7 2 0 0
Photograph of multicoloured tiles (black, white, blue, green, and yellow) arranged with two-fold rotational symmetry and a pair of orthogonal mirror orientations. Without colouration, the pattern would have six-fold rotational symmetry and six mirror orientations.

Photograph of multicoloured tiles (black, white, blue, green, and yellow) arranged with two-fold rotational symmetry and a pair of orthogonal mirror orientations. Without colouration, the pattern would have six-fold rotational symmetry and six mirror orientations.

Tiling in the Palace of the Lions (p2mm symmetry). #TilesOnTuesday #Tiling #Alhambra #Granada #Andalucia #Architecture #Symmetry #Photography

1 month ago 13 3 0 0
Photograph of multicoloured tiles (black, white, blue, green, and yellow) arranged with two-fold rotational symmetry and a pair of orthogonal mirror orientations. Without colouration, the pattern would have six-fold rotational symmetry and six mirror orientations.

Photograph of multicoloured tiles (black, white, blue, green, and yellow) arranged with two-fold rotational symmetry and a pair of orthogonal mirror orientations. Without colouration, the pattern would have six-fold rotational symmetry and six mirror orientations.

Tiling in the Palace of the Lions (p2mm symmetry). #TilesOnTuesday #Tiling #Alhambra #Granada #Andalucia #Architecture #Symmetry #Photography

1 month ago 13 3 0 0
An effigy of a man in sumptuous colthing, staring contemplatively at a skull that he holds in his left hand.

An effigy of a man in sumptuous colthing, staring contemplatively at a skull that he holds in his left hand.

Effigy in Granada Cathedral. #MementoMoriMonday #MonumentMonday #Skull #Granada #Andalucia #Photography

1 month ago 5 1 0 0
An effigy of a man in sumptuous colthing, staring contemplatively at a skull that he holds in his left hand.

An effigy of a man in sumptuous colthing, staring contemplatively at a skull that he holds in his left hand.

Effigy in Granada Cathedral. #MementoMoriMonday #MonumentMonday #Skull #Granada #Andalucia #Photography

1 month ago 5 1 0 0
Photograph of a modern stained glass window in the shape of a tall arch, its vibrant colours standing out boldly against entirely black surroundings. The colours range from yellow and red at the base, rising through green and then blue, culminating in a mixture of hues toward the apex. The lower portion contains billowing shapes evocative of a seashore, while the middle section contains myriad seabirds in whirling flight, ascending to a more abstract realm above.

Photograph of a modern stained glass window in the shape of a tall arch, its vibrant colours standing out boldly against entirely black surroundings. The colours range from yellow and red at the base, rising through green and then blue, culminating in a mixture of hues toward the apex. The lower portion contains billowing shapes evocative of a seashore, while the middle section contains myriad seabirds in whirling flight, ascending to a more abstract realm above.

The Illumination Window, Durham Cathedral. Mel Howse (2019) in Memory of Sara Pilkington. #StainedGlassSunday #Durham #Cathedral #StCuthbert #Seascape #Birds #Photography

1 month ago 9 3 0 0
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Photograph of a modern stained glass window in the shape of a tall arch, its vibrant colours standing out boldly against entirely black surroundings. The colours range from yellow and red at the base, rising through green and then blue, culminating in a mixture of hues toward the apex. The lower portion contains billowing shapes evocative of a seashore, while the middle section contains myriad seabirds in whirling flight, ascending to a more abstract realm above.

Photograph of a modern stained glass window in the shape of a tall arch, its vibrant colours standing out boldly against entirely black surroundings. The colours range from yellow and red at the base, rising through green and then blue, culminating in a mixture of hues toward the apex. The lower portion contains billowing shapes evocative of a seashore, while the middle section contains myriad seabirds in whirling flight, ascending to a more abstract realm above.

The Illumination Window, Durham Cathedral. Mel Howse (2019) in Memory of Sara Pilkington. #StainedGlassSunday #Durham #Cathedral #StCuthbert #Seascape #Birds #Photography

1 month ago 9 3 0 0
Close-up photograph of a small plant with a single main stem and several sprays of tiny white flowers. The plant (which is maybe cow parsley) is in sharp focus, while the background (rocks and still water) is in soft focus.

Close-up photograph of a small plant with a single main stem and several sprays of tiny white flowers. The plant (which is maybe cow parsley) is in sharp focus, while the background (rocks and still water) is in soft focus.

On the Banks of Loch Lomond. #FlowersOnFriday #Flowers #LochLomond #Trossachs #Scotland #MacroPhotography #Photography

1 month ago 22 4 0 0
Close-up photograph of a small plant with a single main stem and several sprays of tiny white flowers. The plant (which is maybe cow parsley) is in sharp focus, while the background (rocks and still water) is in soft focus.

Close-up photograph of a small plant with a single main stem and several sprays of tiny white flowers. The plant (which is maybe cow parsley) is in sharp focus, while the background (rocks and still water) is in soft focus.

On the Banks of Loch Lomond. #FlowersOnFriday #Flowers #LochLomond #Trossachs #Scotland #MacroPhotography #Photography

1 month ago 22 4 0 0
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Chemical softness as a predictor for reactivity at metal surfaces The problem of identifying and characterising the active sites for heterogeneous catalysis can be addressed by employing descriptors of reactivity, such as the local softness. A new method of calculat...

Just published today, we are delighted to share our paper entitled “Chemical Softness as a Predictor for Reactivity at Metal Surfaces” #ChemSky #CompChemSky

1 month ago 3 2 1 0