Profile

Cover photo
Peter Dahl
156 followers|42,767 views
AboutPostsPhotosVideosReviews

Stream

Peter Dahl

Shared publicly  - 
 
 
Inspired by an abalone shell, Angela Belcher programs viruses to make elegant nanoscale structures that humans can use. Selecting for high-performing genes through directed evolution, she's produced viruses that can construct powerful new batteries, clean hydrogen fuels and record-breaking solar cells. In her talk, she shows us how it's done.
1 comment on original post
1
Add a comment...

Peter Dahl

Shared publicly  - 
 
 
This is amazing. The future of 3D printing? 100x faster, and magical in how it appears :-)
What we think of as 3D printing, says Joseph DeSimone, is really just 2D printing over and over ... slowly. Onstage at TED2015, he unveils a bold new technique — inspired, yes, by Terminator 2 — that's 25 to 100 times faster, and creates smooth, strong parts. Could it finally help to fulfill the tremendous promise of 3D printing?
1 comment on original post
1
Add a comment...

Peter Dahl

Shared publicly  - 
 
 
Why Do People Persist in Believing Things That Just Aren't True

It’s the realization that persistently false beliefs stem from issues closely tied to our conception of self that prompted Nyhan and his colleagues to look at less traditional methods of rectifying misinformation. Rather than correcting or augmenting facts, they decided to target people’s beliefs about themselves.

Very interesting research here about why you're arguments and persuasive debates about a topic might be fruitless.

#psychology  
To change false beliefs, appealing to a person’s sense of self may be more important than the facts.
1
1
Seongbae Park's profile photo
Add a comment...

Peter Dahl

Shared publicly  - 
 
Our Nest thermostat has been working fine for the past year. Yesterday it disconnected from the WiFi and would not light up  when someone walked by. Low battery. I pulled it off the wall and stuck a USB charger on it. While I was waiting for that I did a few searches and read up on how it steals power when it can. It is a common problem for it to not keep up. The fix was to connect the 24VAC ground "C" wire. Apparently this ground helps it get charged much more reliably. Today the battery was fully charged.
5
1
Todd Wang's profile photoWarren Yenson's profile photoAbraham Matthews's profile photo
2 comments
 
nest++

I feel I need to get a nest CO2 alarm for upstairs, so the thermostat downstairs has a better idea of when the house is truly unoccupied. Unfortunately, my current CO2 (wired) alarm is downstairs, right next to the current thermostat location.
Add a comment...

Peter Dahl

Shared publicly  - 
 
 
Okay, pretty much every one of these maps shows something interesting.

(When I was working for the World Health Organization's Global Programme on AIDS during college, I wrote mapping software to display various kinds of geographic data, so I've always liked maps that make some interesting data eminently clear).
  If you're a visual learner like myself, then you know maps, charts and infographics can really help bring data and information to life. Maps can make a point resonate with readers and this c...
2
Matt Tennant's profile photo
 
I love those. Thanks!
Add a comment...

Peter Dahl

Shared publicly  - 
 
8 day sailing trip to North Channel in Lake Huron. Very little wind, lots of mosquitos, granite sculptures left behind by glaciers, great dingy exploring, lots of wildlife, lock tour in Sault Ste Marie.
9
Sebastian Wilhelmi's profile photoPeter Dahl's profile photo
2 comments
 
Yes, this is the area I sailed with my parents when I was a kid. It is different being there as an adult, so many rocks to avoid but GPS gives us the equivalent of local knowledge. The cold freshwater is great. We went early in the season so no one was around.
Add a comment...
Have him in circles
156 people
Stephen Gunn's profile photo
City of Sunnyvale's profile photo
Matthew Liggett's profile photo
Mark Roth's profile photo
The Tech Museum of Innovation's profile photo
sudhir yadav's profile photo
Joe Mastroianni (iceowl)'s profile photo
Xiaodong Chu's profile photo
Daniel Peng's profile photo

Peter Dahl

Shared publicly  - 
 
Snorkeling in Kuilima Cove, Oahu
9
Add a comment...

Peter Dahl

Shared publicly  - 
 
Some ducks were lost so we herded them around the buildings to the lake. Someone who noticed bought our breakfast for us. A nice way to start the weekend!
15
Dmitry Ilyevsky's profile photo
 
So you trained those ducks to get free breakfasts? Nice.
Add a comment...

Peter Dahl

Shared publicly  - 
 
Peter Dahl originally shared:
 
Photos from our trip to Vancouver and Free Rein Ranch
4
Add a comment...

Peter Dahl

Shared publicly  - 
 
 
How one activity you do every day made the human brain possible:
The human brain is puzzling -- it is curiously large given the size of our bodies, uses a tremendous amount of energy for its weight and has a bizarrely dense cerebral cortex. But: why? Neuroscientist Suzana Herculano-Houzel puts on her detective's cap and leads us through this mystery. By making "brain soup," she arrives at a startling conclusion.
1
John Mishanski's profile photo
 
It's surprising how much energy is consumed by our brains.  Now if only that consumption was proportional to the amount of thinking we do.  Then all of us computer scientists with desk jobs would be in amazing shape!
Add a comment...

Peter Dahl

Shared publicly  - 
 
During dinner we heard water spraying outside. One of the galvanized fittings developed a hole right through the casting. This is a fitting I put on about 8 years ago. Makes we worry about the rest of the fittings and pipes. I assume it was due to the dissimilar metals causing corrosion.
1
Tobias Klausmann (Blackbird)'s profile photoPeter Dahl's profile photo
2 comments
 
The bronze faucet was above and based on the rust it looks like it was slowly leaking for a while before it let go.  I am thinking a combination of the water sitting for a long period of time, the galvanic effect, and possibly a cheap zinc coating on inside of the fitting. Definitely corroding from the inside out. I am unable to get the faucet off the fitting.
Add a comment...
People
Have him in circles
156 people
Stephen Gunn's profile photo
City of Sunnyvale's profile photo
Matthew Liggett's profile photo
Mark Roth's profile photo
The Tech Museum of Innovation's profile photo
sudhir yadav's profile photo
Joe Mastroianni (iceowl)'s profile photo
Xiaodong Chu's profile photo
Daniel Peng's profile photo
Links
YouTube
Contributor to
Basic Information
Gender
Male
Wonderful experience. We had no idea we would learn so much horse psychology. Catching your horse each day and working with it at the beginning so it follows you is quite an experience. We say wildlife on the trails including moose and a bear. Debbie matched our riding skills to horses and we got to know our horses well. Highly recommended for kids, a real confidence booster.
Public - 3 months ago
reviewed 3 months ago
1 review
Map
Map
Map