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How to see bright, vivid images in your mind’s eye (2016)
Learn to improve the brightness and clarity of images in your mind's eye. Image Streaming is an easy technique to learn. Is it a cure for aphantasia?
New
The latest blog posts to take off on Hacker News. 440 posts.
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Pharmacokinetics: Drug development's broken stair
There’s a blog post that floats around the Internet about the metaphor of the broken stair.
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Drinking diet sodas daily during pregnancy linked to autism in male offspring
Contact: Steven Lee, (210) 450-3823, lees22@uthscsa.edu SAN ANTONIO, Sept. 20, 2023 – A new published study led by researchers at The University of Texas Health Science Center at San Antonio (UT Health San Antonio) has found an association between autism diagnosis in boys and daily consumption of either diet soda or a…
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Scientists unveil fire-safe fuel
UC Riverside chemical engineers have designed a fuel that ignites only with the application of electric current. Since it doesn’t react to flames and cannot start accidental fires during storage or transport, it is a “safe” liquid fuel.
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Desalination system could produce freshwater that is cheaper than tap water
A new solar desalination system takes in saltwater and heats it with natural sunlight. The system flushes out accumulated salt, so replacement parts aren’t needed often, meaning the system could potentially produce drinking water that is cheaper than tap water.
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A journey into the shaken baby syndrome/abusive head trauma controversy
Cambridge University Press is publishing a textbook I have co-edited with five colleagues, Shaken Baby Syndrome, Investigating the Abusive Head Trauma Controversy, by Findley et al. With contributions by 32 authors, this book provides a thorough analysis of an interdisciplinary subject lying at the intersection of…
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Type 2 diabetes rates in US youth rose 62% after Covid pandemic began
Rates of new-onset type 2 diabetes climbed 62%—and type 1 diabetes increased 17%—among US youth after the COVID-19 pandemic began, especially in Black and Hispanic children, according to a study published yesterday in JAMA Network Open .
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Suppressing negative thoughts may be good for mental health after all
The commonly-held belief that attempting to suppress negative thoughts is bad for our mental health could be wrong, a new study from scientists at the University of Cambridge suggests.
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Archaeologists discover oldest wooden structure
Archaeologists discover world’s oldest wooden structure
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Circles do not exist
Many logos, drawings and other graphical designs have the following shape in it. What is this shape? If you thought: "Ah-ha! I'm smart and r...
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“Inverse vaccine” shows potential to treat MS and other autoimmune diseases
A new type of vaccine developed by researchers at the University of Chicago’s Pritzker School of Molecular Engineering (PME) has shown in the lab setting that
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A mathematical formalization of dimensional analysis (2012)
Mathematicians study a variety of different mathematical structures, but perhaps the structures that are most commonly associated with mathematics are the number systems, such as the integers $late…
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Can I take ducks home from the park?
16 queries and 6 language models
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Public exposure to BPA exceeds acceptable health safety levels
Population exposure to the synthetic chemical Bisphenol A (BPA), which is used in everything from plastic and metal food containers to reusable water bottles and drinking water pipes in Europe is well above acceptable health safety levels, according to updated research data. This poses a potential health risk to…
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Bacteria generate electricity from wastewater
In a breakthrough for the field of bioelectronics, researchers at EPFL have enhanced the ability of E. coli bacteria to generate electricity. The innovative approach offers a sustainable solution for organic waste processing while outperforming previous state-of-the-art technologies, opening new horizons for versatile…
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Solar
I spent some time (in Fall 2023) reading about solar deployment. Some facts that struck me:
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What Is Dimensional Analysis?
Mathematics is famously concerned with numbers . However, most of the physical quantities that we encounter in everyday experience cannot be expressed as numbers alone.
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A CD Spectrometer (2006)
A simple spectrometer can be built from a CD and a box. Cut a slit on one side of the box. Place the CD on the other side with about 60 degree angle. Look down into the openning on the box. The slit should not be too wide, otherwise the spectrum lines will be blurred. It should not be too narrow either, otherwise the…
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New world record with an electric racing car: From 0 to 100 in 0.956 seconds
Students from ETH Zurich and Lucerne University of Applied Sciences and Arts have broken the previous world record for acceleration with their hand-built electric racing car, mythen. The vehicle accelerated from zero to 100 km/h in 0.956 seconds over a distance of 12.3 metres.
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The Relativity of Wrong (1989)
I received a letter from a reader the other day. It was handwritten in crabbed penmanship so that it was very difficult to read. Nevertheless, I tried to make it out just in case it might prove to be important.
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How large is that number in the Law of Large Numbers?
All large numbers are large, but some are larger than others
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Sony develops energy harvesting module from electromagnetic wave noise
Sony Semiconductor Solutions Group develops device business which includes Micro display, LSIs, and Semiconductor Laser, in focusing on Image Sensor.
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Arxiv.org is experiencing a DDoS attack
arXiv users may be experiencing email disruption due to a DDOS attack. Over the past few days, a small number of users issued over a million email change…
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Blood pressure should be measured lying down: study
Research Highlights: An analysis of data from a long-running study of more than 11,000 adults from four diverse communities in the United States has found that adults who had high blood pressure while both seated upright and lying supine (flat on ...
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WiFi can read through walls
UCSB researchers’ new method enables high-quality imaging of still objects with WiFi by using the Geometrical Theory of Diffraction and the corresponding Keller cones to trace edges of the objects.
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