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Frame from Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer Plays via YouTube's privacy-enhanced embed

Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer

3 videos recommended on HN
YouTube
Cited on HN 3 times, 2017–2020, never outright recommended score 0
Years with an HN recommendation, 2007–2026

HN cites it as an example of early research into room-scale wireless power transfer.

Disney Research's demo of quasistatic cavity resonance, which uses a purpose-built room or cabinet to generate magnetic fields that deliver kilowatts of power wirelessly to mobile receivers inside.

“There is already early-stage research into long-range wireless charging” (HN, 2020)

3 citations · Demos · intermediate · partly dated

3 Hacker News comments

From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.

@stuntkite Feb 2019 Cites it
on HN thread How does the Hololens 2 matter?
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That is doable right now. I am only sort of being glib here. I just want to outline what's involved in what people think is a simple task in a spatial system. TLDR: As of right now, your wildest dreams are pretty possible. In the next 2 years, how we compute is going to get strange. Nothing is nearly as simple in an XR environment as a traditional computing one and currently most people don't really want what they'd ask for. Building a simple (useful) XR app makes launching a web product look like assembling a lego set vs. landing on the moon. --------- Imagenet[0] works just fine for the object identification. You would probably want to use RGBd sensors like the kinect[1] or Intel Realsense[2] instead of regular cameras, but tracking like what the Vive[3] uses could also work. The thing you just proposed would involve a network of server processes handling the spatial data and feeding extracted relevant contextual information to a wireless headset at a pretty crazy rate. Just to give you an idea a SLAM[4] point cloud from a stereo set of cameras or a cloud from a Kinect2 or Realsese produces a stream of data that is about 200mb a second. Google Draco[5] can compress that and help you stream that data at 1/8 the size without any tuning. Extracting skeletal information from that is really something that only Microsoft has reliably managed to deliver and it's at the core of the Kinect/Hololens products. NuiTrack[6] is the next best thing, but registering a human involves a T-Po
Video linked alongside a long discussion of spatial computing
@judge2020 Jan 2020 Cites it
on HN thread FBI Surveillance Vendor Threatens to Sue Tech Reporters for Crime of Journalism
I mean, the issue with cameras on everyone is that they all require small batteries, meaning always recording with them isn't really practical. There is already early-stage research into long-range wireless charging [this video] so maybe 15+ years in the future it would be practical to have always-recording devices.
Early research on long-range wireless charging

Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.

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