akuheinonen akuheinonen

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Aku Heinonen  Amateur photographer based in Finland: nature, sports, street, travel, life...

Continuing on the recently started mineralogical slant here... this is a rather large (~5cm) crystal of synthetic quartz used as an example of free crystallization from a silica-saturated liquid on my basic course... came back from a meeting-filled day to the office and this was waiting for me on the table basking in the afternoon sun... just nice... have a great weekend! #mineralogy #science #geology #mineral #quartz #geosciences #sio2 #prism #sunshine #crystal #crystallography #rhombohedral #trigonal #reflection #refraction

A brief study of autumn light on my way to the office the other morning... #randomshot #fall #autumn #light #dark #morning #road #sky #clouds

So, this turned out to be fun... this is a leucotroctolitic rock from the Ahvenisto complex in SE Finland... the anhedral olivine grains have peculiar alteration rims, which makes for some interesting and stimulating patterns... we already made out a "duck that dances on a toy car", "a pensive moomin troll", and, my favorite, "some guy throwing a frisbee at a fox"... see if you can spot them all, and many more... #geology #petrology #mineralogy #fieldday #igneous #magmatic #cumulate #olivine #plagioclase #texture #minerals #rock #sample #ahvenisto #mäntyharju #fieldwork #fieldtrip

More wonders from the basic mineralogy course... some minerals exhibit a strong difference in their color absorption depending on the polarization direction of the light transmitted through them... the phenomenon is called pleochroism... here is a single crystal of cordierite observed in two different angles... to illustrate the phenomenon the sample is backlit by a projector, which amplifies the color differences... the actual color corresponding to the green in the first image is actually light brown or yellowish... #mineralogy #geology #ceystallography #geosciences #science #teaching #pleochroism #dichroism #optics #cordierite #crystal #green #blue

Studying fluorescence and fosforescence in minerals with the students on the mineralogy basic course today... looking forward to the ooh's and the aah's... #mineralogy #geology #geoscience #minerals #fluorescence #fosforescence #light #color #colorful #uvlight #blacklight

Some broader views from the island for a change... this was taken on the fields of Montegrosso below the town of Galenzana on the northern coast of Corsica... we were tracking a couple of red kites (Milvus milvus) for the better part of the day while making our way down from the mountains... a very hot day and not that successful for the hunting birds... but nice memories... #landscspe #landscapephotography #nature #naturephotography #mountains #hills #fields #forest #bluesky #corsica #corse #montegrosso #galenzana #summer2018 #view #birdwatching

More macro action from Corsica... good'ol Jiminy posed nicely for a couple of portrait shots... #cricket #insect #insectphotography #nature #naturephotography #wildlife #wildlifephotography #jiminy #macro #macrophotography #corsica #corse #summer2018 #luontokuva

Some more color to light up the slowly deepening shadows of the autumn... damselflies were frequent companions on our hikes in the Corsican mountains last summer... they'd scatter away from their stream bed hangouts only so briefly just to return as quickly and check us and our gear out... blue, black, brown, and green... endless colors most beautiful... #nature #naturephotography #insect #insectphotography #wildlife #wildlifephotography #damselfly #forest #mountains #stream #corsica #corse #summer #hike #blue #wings #flight

"You don't photograph pigeons..." said John Free once... I think he meant one shouldn't, and after I picked it up it has somehow grown to be one of those so many stupid rules I let shackle my own photography and narrow my creativity... so take this as a statement if you will... break the rules and shoot whatever, even pigeons... #street #streetphotography #bnw #bnwphotography #pigeon #bird #birdphotography #water #stream #fountain #heidelberg #germany

Long time no posting as I've been too busy at the office lately but this week's weather finally forced the urge to return to the memories from the past summer... had a close encounter with this GIANT(!) bush cricket on the Maquis cliffs above Bonifacio on Corsica in June... not completely happy with how the focus turned out but I bet one can still make out some intriguing details... hope to have more time for editing soon... #bushcricket #cricket #insect #insectphotography #nature #naturephotography #wildlife #wildlifephotography #macro #macrophotography #corsica #corse #bonifacio #summer #summer2018 #holidays #luontokuva

Screwing around at the office with some "forbidden symmetries" to kick off the weekend... the non-periodic icosahedral phase discovered by Prof. D. Shechtman in 1982 became pivotal evidence for the existence of so-called quasicrystals, or quasi-periodical crystals, which possess symmetry elements forbidden by the classical theory of crystallography. Inspiring story of a discovery first ridiculed by the scientific community but finally honored with the chemistry Nobel in 2011... #icosahedralphase #icosahedron #icosahedralsymmetry #crystallography #crystal #quasicrystal #science #crystalmodel #quasiperiodic #forbidden #symmetry #kumpulasciencecampus

This one is not a Corsican specialty but rather rare in Northern Europe... could easily be mixed up with the regular "small tortoiseshell" (Aglais urticae, nokkosperhonen) but is the slightly larger and actually not that closely related "large tortoiseshell" (Nymphalis polychloros, kirsikkaperhonen)... #nature #naturephotography #wildlife #wildlifephotography #insect #insectphotography #butterfly #nymphalispolychloros #largetortoiseshell #kirsikkaperhonen #corsica #corse #vizzavona #vizzavone

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