helium   365

« earlier    

x-energy
Another helium gas cooled reactor, but with a traditional steam backend
pebble  bed  helium  coolant  gas  nuclear  reactor  power  generator  steam  HTGR 
22 days ago by asteroza
MRI disabled every iOS device in facility : sysadmin
5 months later, everybody knows about this, but still a pretty crazy failure mode, and a really impressive call on the part of this reddit commenter
helium  electronics  diagnose  failure  cool 
5 weeks ago by aaronbeekay
iPhones are Allergic to Helium | iFixit
This is the kind of tale that you don’t hear every day.  During the installation of a new MRI machine, a technician started getting calls that iPhones weren’t working—but Androids were just fine.
materials.science  helium  iphones  mobile  electronics 
november 2018 by po
IPhones are allergic to helium • iFixit
Kyle Wiens on the strange case of a helium leak at a hospital which bricked newer iPhones and Watches - but not Android phones:
<p>Every phone has gyroscopes and accelerometers with micrometer-thin elements. My initial theory, shared by some on Reddit, was that the helium molecules were small enough to get inside these chips and interfere with the mechanical workings.

But there are two problems with this idea: One, Apple isn’t alone in using MEMS gyroscopes—every phone has them. Why weren’t the Android phones affected? Perhaps there’s a bug in iOS that causes crashes when it gets faulty data from the gyro? But the bug impacted Apple Watches, too—and they run WatchOS. Additionally, iPhones earlier than the 6 weren’t affected. It seems unlikely that this was a new software bug that impacted both iOS and WatchOS.

So what else could it be? Well, at the heart of every electronic device is a clock. Traditionally, these are quartz oscillators, crystals that vibrate at a specific predictable frequency—generally 32 kHz. When they were first invented, they enabled the first digital ‘quartz’ watches. Now, these frequency generators are at the heart of every electronic device.

Without a clock, the system stands still. The CPU flat out doesn’t work. The clock is literally the heartbeat of a modern device.

But quartz oscillators have some problems. They don’t keep time as well at high (and low) temperatures, and they’re a relatively large component—1×3 mm or so. In their quest for smaller and smaller hardware, Apple has recently started using MEMS timing oscillators from a specialized company called SiTime to replace quartz components.

Specifically, they’re using the SiT512, ‘the world’s smallest, lowest power 32 kHz oscillator.’ And if the MEMS device was susceptible to helium intrusion, that could be our culprit!</p>

The electron microscope pictures are amazing too.
Apple  helium 
october 2018 by charlesarthur
https://physics.nist.gov/PhysRefData/Star/Text/ASTAR.html
ASTAR program calculates
stopping-power and range tables for helium ions in various materials
hydrogen  data  helium  ions 
october 2018 by stahl
We Discovered Helium 150 Years Ago. Are We Running Out?
The versatile gas lies at the center of a complex, fragile global market.
helium  gas  rare  economy  change 
august 2018 by xer0x

« earlier    

related tags

10tb  1980s  2003  2018  absolute  air  aircraft  airships  alfred  allergic  alternatives  amazing  analysis  android-authority  android  androidapp  androidauthority  androidos  anrdoid  app  apple  application  apps  arduino  argon  article  articles  atlanticmonthly  atmosphere  audio  audiophile  autotuning  awaymsgused  backup  balloon  balloons  battery  bed  binary  blackholes  browser  bug  c  camera  canada  capacity  carbon.app  carbon  carbon_dioxide  carbonapp  cassini  change  chemistry  chrome  city  cleveland  cloud  co2  commercial  conservation  cool  coolant  cooled  coproduct  data  databases  delicious  desktop  diagnose  discovery  diy  don39t  download  droid  dynamic  economics  economy  editorial  efimovstate  electronics  energy  engineering  enterprise  enviro-compute  eqc  erlang  eureka  exchanger  extractives  failure  fire  first  flammability  float  fluorine  foam  forum  freeze  fuel  fullscreen  gas  gasses  generator  geology  github  good  google  great  hackster.io  haskell  hd  hdd  heat  helium.app  heliumandroid  heliumapp  heliumbackup  heliumdesktop  hexagon  high  history  hongkiat  how-to  howto  htgr  hydrogen  hyperobject  ide  idea  ifixit  ifttt  industrial  infrared  installer  instructions  insurance  internetofthings  ions  iot  iphone  iphones  its  jade  jetstream  key-value  key-valuestore  krypton  laboratory  lebanon  lighter.than.air  lightning  links  linux  liquid  literal.clouds  lte  mac  macintosh  macos  macosx  magnets  markets  materials.science  materials  matter  mems  menubar  metal  middleeast  mig  migration  minerals  miscellany  mobile  modular  molecule  monitor  movie  mri  msr  muhongo  nanocomposite  nasa  naturalgas  nature  near  no-root  non-rooted  nonrooted  noroot  nosql  nuclear  official  on:ifixit.org  open-source  oscillators  osx  osxdev  outs  particle  particles  party  pc  pebble  phone  physics  pictures  plasma  platformio  point  politics  postmarketos  power  precipitation  prism  process  production  programming  projection  projector  propulsion  prototyping  purism  qatar  quantum  quantumcomputing  quantummechanics  quartzmag  quickcheck  quotfloatingquot  rare  rawmaterials  reactor  require  research  resources  response  restore  reverse  rings  rootless  saturn  science  seagate  security  sensors  setup  small  smr  software  solid  space  speakers  special.effects  steam  storage  store  superconducting  superfluids  supplies  sync  syncing  synfuel  sysadmin  taiwan  tanzania  technology  temperature  theater  theatre  tool  touch  tpdc  tractor  transport  travel  tri_mix  triso  trump  turboinductor  tutorial  twilio  usa  utility  vacuum  video  voice  voyager  waste  welding  widget  wind  window  windows  windowsos  wireless  wordpress  workflow  world  x86  xenon  youtube  zero 

Copy this bookmark:



description:


tags: