Jan-Maarten

Red dot

Ik heb gestemd, voor een duurzame, rechtvaardige samenleving

Weather stations up & running! The Smart Citizen kit (open source), an Ecowitt station, and 3 different Nutshell eDNA samplers for testing

Borstwervel van een zoogdier (want articulatievlak voor rib), lijkt me wat groot voor een zeehond. Geen expert, maar ik denk aan dolfijn of schaap.

Korean perilla seedling with triple whorls instead of double ones. Happy little monster

@atinygreencell.bsky.social , turns out I am growing a Korean perilla (Perilla frutescens) that is doing a consistent triple whorl, spontaneously. Happy to ship a sample, once shipping between our countries is a go again

Metallic green bluebottle fly perched on the edge of a leaf. Hair metal.

Stone bumblebee feeding on borage. It is hanging upside down from the blue-pink flower, which is pointed downwards

Aasvlieg en steenhommel-komkommerkruid brunch. Green bluebottle fly and stone bumblebee feeding on borage.

Close up of a spider in a slightly tattered web, drinking from their juice box

Close up of a fly on a leaf seen from the side. Big brown-red eye and pearly wings. Alert but still.

Fly on a flower bud in close up. The background is all blurry bc the zoom lens you need to get this close.

Nothing but some critters goin about their business

DNAir sampler works in simulation too! Downward vertical air movement is color coded red. github.com/J4n-M44rt3n/...

Trees in the dunes, looking like shadowplay figures

Trees in the dunes, looking like shadowplay figures

Trees in the dunes, looking like shadowplay figures

Meijendel hike

Walking towards the launch of a new strandbeest, at a sunny slightly windy day at Scheveningen beach. Lots of people arounf, all taking photos with their phones

Theo Janssen in a dark purple shirt and a tan cowboy-type hat guiding his strandbeest, with people, beach, and sea in the background

Close up of the strandbeast sails with blue sky in the background. The light plays beautifully in the white sails

Ongoing strandbeest launch as seen from the dunes. It all seems so small from afar

Sarah and I went to see the launch of this year's strandbeest, at Scheveningen beach

Two small plant incubators in a windowsill, uv leds give a purple glow to the surroundings

Purple glow on a windowsill, I outfitted plant hatchery boxes with led strips today

Windtunnel on shelf, vacuum cleaner motor mounted with zipties on 3D printed pedestal, fan in large pvc tube (30 cm diameter)

Windtunnel, view from the other end, fan in the distance

Testing a new windtunnel build; vacuum cleaner universal motor, custom fan, zipties. Up to 4 m/s and counting.

Bumlebee on lavender, even closer but shakier too

More bumblebee on lavender

Bumblebee on lavender

Spider-like, hand built Balinese fishing vessels out on the ocean on a bright, slightly cloudy day

Spider-like, hand built Balinese fishing vessels out on the ocean on a bright, slightly cloudy day

Spider-like, hand built Balinese fishing vessels out on the ocean on a bright, slightly cloudy day

Squid fishin' fleet, Les, Bali

Een Seek thermal compact pro voor je smartphone met zelfgemaakte toevoegingen om macro opnames te kunnen maken

#ElkeDagEenInsect

Rhinoceros beetle on our porch last night

Aardhommel op gele lis

Boomhommel op leeuwenbek

Johanneskever op gele lis

Gele lis met kleine vriendjes

Aardhommel, boomhommel, rozenkever, gele lis met kleine vriendjes

Foraging bumble bee, look at those flight muscles!

Also, it is a celebration of science as an everyday practice as opposed to a rarefied academic exercise; you too can go out, study, and support the kaleidoscope of life in your neighborhood. I enjoyed this book a lot, maybe you will too!

Book cover of Menno Schilthuizen's 'the urban naturalist'. It shows stylized, colorful outlies of urban plants and animals and the tools to study them.

Does nature observe city limits? Why no, it does not. Menno Schilthuizen´s ´the urban naturalist´ is full of fascinating stories of life adapting to the urban environment and the people studying it.

Have they not been keeping up with the news?

Nah, that was the guzzly, vodka was involved

Shouldn't the hero first, like, fight a grizzly bare handed or such?

Electroplating setup, blue liquid in a plastic box with electrical contacts hung in them. An example of an electroplated ring is hold up in front of the camera.

3D printed design for the frame for an ion-plasma wind tunnel. Looks a bit retro sci-fi, with three concentric funnels connected to a short open cylinder.

Second electroplating experiment, for an anode for what will be an ion-plasma wind tunnel. Electroplating is fun and easy, I can live with that!

Action to address climate crisis is CRITICAL! Definitely a great step towards getting different institutional leadership to work in unison!

Stylized purple octopus with safety goggles, this is the logo of Hackuarium Biolab in Ecublens Switzerland

Bio comunity lab extraordinaire Hackuarium celebrates their 10th anniversary this weekend! Join on video here -> epfl.zoom.us/j/61330371040 ; Program here -> wiki.hackuarium.ch/images/9/9e/...

Slime mold Andi: the first non-human organism genetically modified to its own specifications I. Recap: how to talk with a slime mold

Slime mold Andi, ambassador for the slime realm slime-mold-andi.medium.com/slime-mold-a...

YouTube video by NASA NASA Astronaut Don Pettit Soyuz MS-26 Launch

In about fifteen minutes, slime mold Andi will be heading for the International Space Station, invited by NASA astronaut Don Pettit. Such an adventure! You can follow the launch here: www.youtube.com/watch?v=c59N...