Peter Johnsen, PhD

2.5K posts

Peter Johnsen, PhD banner
Peter Johnsen, PhD

Peter Johnsen, PhD

@rocketjohnsen

Man of science, metal bender, EUV producer, and human-powered traveler

Cambridge, MA Katılım Ağustos 2021
293 Takip Edilen2.4K Takipçiler
Sabitlenmiş Tweet
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
*in my most woo voice* yeah, i study the harmonics of crystals' natural energy resonances. this one is titanium:sapphire
Peter Johnsen, PhD tweet mediaPeter Johnsen, PhD tweet media
English
16
40
635
20.2K
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
Poets say science takes away from the beauty of the stars — mere globs of gas atoms. I too can see the stars on a desert night, and feel them. But do I see less or more? The vastness of the heavens stretches my imagination — stuck on this carousel my little eye can catch one-million-year-old light. A vast pattern — of which I am a part…. What is the pattern, or the meaning, or the why? It does not do harm to the mystery to know a little about it. For far more marvelous is the truth than any artists of the past imagined it. Why do the poets of the present not speak of it? What men are poets who can speak of Jupiter if he were a man, but if he is an immense spinning sphere of methane and ammonia must be silent? -Richard Feynman (Photo from the Osa Peninsula)
Peter Johnsen, PhD tweet media
English
0
0
0
13
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
Sometimes the trip is scary as hell, but you can't beat the view
Peter Johnsen, PhD tweet mediaPeter Johnsen, PhD tweet mediaPeter Johnsen, PhD tweet mediaPeter Johnsen, PhD tweet media
English
0
0
4
187
Nick Volpe
Nick Volpe@nvolpewild·
OMMMMG WE JUST FOUND A NEW SPECIES OF WEEVIL IN AN ANT NEST MY HEART IS RACING ITS INSANE!!!! 🤯😵🤯🐜
English
14
30
792
17.4K
Old Hollow Tree
Old Hollow Tree@OldHollowTree·
About once a month someone reminds me that “bees won’t build over religious images”. Not to be a downer but…has anyone tried this with a control? Could it just be the material of the picture?
Old Hollow Tree tweet mediaOld Hollow Tree tweet media
English
292
186
17.8K
1.9M
grace
grace@graciouswoodsy·
happy sunday friends, do something today that makes u feel warm inside
English
2
0
36
1K
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
Step 2: secure the bag, accomplish the task, fly far away and do whatever you need to do. Maintain a path-integration estimate of where home is (green arrows) Step 3: fly straight home. Go back towards home as efficiently as you can (orange arrows) Step 4: final homing sequence. Accumulated errors caused you to slightly miss your target, but you landed within the initial learning flight zone, so you can get home based on the neural net trained on the original images (red camera sequence)
Peter Johnsen, PhD tweet media
English
1
0
0
59
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
First step to building government bee-drone: building regular drones that can navigate like bees
Peter Johnsen, PhD tweet media
English
1
0
0
125
Mark Collins
Mark Collins@mark_collins09·
@rocketjohnsen "At last, we've spent 6 years and $100m, but we finally have a demonstration of our newest X-ray emitter" Some guy trying to tape a notice to the door and continually screwing it up "Weird, I can see through my hand when I move the tape"
English
1
0
1
36
outside five sigma
outside five sigma@jwt0625·
you might have heard x ray emission from peeling adhesive tapes, now you know the best tape for it is tesa 64250.
outside five sigma tweet mediaoutside five sigma tweet mediaoutside five sigma tweet media
English
47
435
4.6K
208.1K
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
@DanyBittel I was shooting manual, but there were some strong lights coming in from the window. I'll give it a go!
English
0
0
0
36
Dany Bittel
Dany Bittel@DanyBittel·
@rocketjohnsen Thanks.. I like your llama! The exposure seems to wander a bit, if you had auto exposure try PPISP.
English
1
0
1
549
Dany Bittel
Dany Bittel@DanyBittel·
A blueberry. 90 stacks, 68 photos each. 1.48M splats. #3dgs
English
103
310
6.5K
718.4K
Peter Johnsen, PhD
Peter Johnsen, PhD@rocketjohnsen·
@MemesEnds @bytheophana For sure! But even after 25 years at TI, he chose to build TSMC in Taiwan and not Texas. The comparative work ethic in Taiwan vs the US is one of many reasons he’s stated publicly, including TI’s unwillingness to fab chips for others and Taiwan’s willingness to invest in a new co
English
0
0
1
29
tiff
tiff@bytheophana·
a cab driver in taipei told me that taiwanese tmsc workers universally dread going to america for business trips. he said that americans leave for happy hour while taiwanese people have to stay behind to finish their work. this makes them feel really uncomfortable and unhappy, like they’re second class citizens despite the fact that they come from HQ. sad and upsetting to hear, although unsurprising. i asked him if those workers ever believe tsmc america will surpass tsmc taiwan. taiwanese consensus is that americans simply lack the work ethic and attention to detail to ever close the gap.
English
58
78
2.1K
172.2K