Scientists think they figured out how Egyptians moved big stones

egyptThe mystery of how the ancient Egyptians moved the large stones to build the pyramids has possibly been solved.  A team from the University of Amsterdam found that to make it easier for stones or statues to slid when pulled on a wooden sled, you just moisten the sand in front.  Tests confirmed that doing so (with the right amount of water) cuts the force required to pull it by half, mostly because the sand doesn’t pile up into a ridge in front of the sled as it’s being pulled.  As further evidence, artwork from the tomb of Djehutihotep shows a large statue being pulled on a sled…and one person pouring liquid onto the ground right in front of the sled.  It’s a pretty compelling argument, though not as cool as the idea of aliens in UFOs using tractor beams to help out. 😉

(via Gizmodo)

3D printed buildings

3D_printed_houseThe idea of building houses using massive 3D printers is nothing new…but it hasn’t moved beyond the idea stage…until now.  In China, the WinSun Decoration Design Engineering company has developed a machine to print ten sample structures, each about 200 square meters in size (they didn’t invent the machine, but are the first to really do something on this scale).  The printer extrudes a concrete-like material to build up the walls layer by layer; printing the sloped roof is possible if the house is done in slices that are then rotated up into position (or you can print the walls in their normal orientation, and add a roof using other construction methods).  The video below shows the process well.  I’d be curious in seeing an environmental comparison of this process versus traditional wood frame houses – concrete is not eco-friendly, but it does have the potential to last much longer.

3D printing with yarn

Who would have thought…a 3D printer that uses yarn?  It uses a needle to piece and entangle the newly placed yarn with the material below, so you end up with more of a ‘lump’ than woven fabric.  But, pretty cool stuff.  Check out the video below to see it in action.

Amazon Fire TV Review

Amazon Fire TVAmazon’s $99 Fire TV is the latest entry in the set top box market…so how does it stack up against AppleTV?  Read on for my Amazon Fire TV review.

My out of the box experience was actually pretty horrible, but I attribute this to immature software and expect it’ll improve over time.  The problem I had was getting it to work with the 720p LCD TV in our family room.  When powering up, it’d display the Amazon Fire TV logo, then the screen would go dark.  It would work just fine with my 1080p projector though, so using that, I manually set the Fire TV to 720p resolution, and was then able to get it to work with my TV.  However, streaming videos from Amazon Instant Video do not play, it’s just a black screen (they work fine on the 1080p projector).  Videos from third party apps play just fine…it’s the Amazon content that won’t play.  I expect this will be fixed by future software updates, just be forewarned if you buy a Fire TV and experience this blank screen on startup.

The Fire TV is very app-focused, like the AppleTV.  What I mean is, if you click on movies or TV, that’s searching Amazon’s content…if you want to search Netflix, or even your own content, you need to go to the app for that.  To play movies or TV shows you’ve ripped to your computer, you’d need to install an app like Plex to access those.  So in this respect it’s not a lot different than AppleTVAppleTV also tucks your ‘created’ content into its own section (‘computers’) and requires you to install software (iTunes) on the computer that houses the content you want to access.

There are some nice games available for free on the Fire TV, and we found them really enjoyable, even with using just the included remote (yes, the optional game controller would be wise, but it was nice to see good levels of functionality with just the remote!).

I don’t like how the Fire TV organizes content in my Instant Video watchlist…the interface for the PS3 is still better for that IMO (but then, maybe I  just need to adapt…).  Just doesn’t work well scrolling through the list one item at a time instead of having categories or genres like AppleTV.  There’s also no way to search for movies and TV shows that are free for Prime subscription members – yes it tells you which qualify, but you can’t limit your search to just that.  The font size used for some on screen information is incredibly tiny (guess I need a bigger TV? 😉 ).  The voice search works pretty well.  These are just relatively minor software gripes…and looking at the effort they’ve obviously put into the user interface so far, I expect it’ll improve quickly from here.  Menu navigation was smooth and quick, the software seemed pretty solid where it really counted (well, except for being unable to play Amazon Instant Video selections on my TV!).

So what’s the verdict?  Well when it comes to functionality, the Fire TV has a couple advantages over the AppleTV – voice search, and games.  However, Apple is rumored to be releasing a new AppleTV soon that includes both of those options…so that advantage may be short-lived.  With either of these products though, to really take advantage of them, you need to buy in to the whole ecosystem the manufacturers’ promote.  That means buying or renting movies and TV shows from one or the other, installing computer-based software to organize your home movie library, using a compatible tablet to stream video to your TV, buying either an iPhone or a Amazon Fire Phone (those should appear later this year), etc.  You’re not looking at a $99 purchase…that’s just the tip of the iceberg when it comes to how this product will impact your life.  So, be prepared for that.  My personal preference is still the AppleTV, mostly because I’ve already invested in that Apple ecosystem and am very happy with it.  For people still transitioning to this connected lifestyle…Amazon is managing to bring to market a pretty solid lineup of products to compete with Apple (I’d probably rank Microsoft a distant 3rd).  No matter which one you opt for…you’ll be happiest if you buy in to the whole ecosystem.  Oh, but if you’re thinking about buying a new Apple TV right now…wait for the new one to be released later this year with voice search and games.

Disclaimer – I own stock in both Amazon AND Apple…hedging my bets you might say…but the truth is they’re both doing a really good job in this personal electronics space.

Too Many People, Too Little Water (peak water)

The news of droughts in the West this year has surely escaped none living in the US…and with global warming forecast to increase severity of droughts, and population continuing to grow, we need to take a long, hard look at water usage in this country.  The title of the video below, ‘The Drying of America: Too Many People, Too Little Water’ sums it up extremely well.  So what can the average citizen do?  Well, you can start with reducing household water consumption – replace lawns with xeriscaping and take shorter showers to begin with.  That will be a great start…though water consumption of food production will need to be improved, as well as energy production.  For example, powering a 60W incandescent lightbulb for a year requires 3,000-6,300 gallons of water (source).  Things like fracking put additional strains on an already short water supply.  So in summary…things are looking bleak, and you can expect this issue to only get worse in coming years.  Don’t be an idiot and plant a new grass lawn!

Proudly powered by WordPress | Theme: Baskerville 2 by Anders Noren.

Up ↑