Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×

Comment Not young, but still bemoaning (Score 1) 370

I'm in my mid 40s. Never owned anything but a manual. I will get an EV for my next car. The nice part will be the instance response and knowing exactly what my car is going to do when I push the (!) gas. But I do find myself FAR more engaged with everything around me driving my car versus my wife's automatic. I don't even consciously do it, but after paying attention to it, I realized I scan and take in way more data, and make way better predictions in my car. There are times it is not ideal - traffic is more frustrating certainly, but I will keep my 6MT TL a long time.

Submission + - Electric Cars Would Save America Huge Amounts of Energy (bloomberg.com)

An anonymous reader writes: Electrifying U.S. vehicles wipes out the equivalent of our entire current power demand. The U.S. consumes a lot of energy; last year, about 100 quadrillion BTUs (equivalent to 17 billion barrels of oil; which, we’ll admit, is only marginally less abstract). But only about a third of that is ultimately used in terms of actually lighting lights, turning wheels and so forth. The second law of thermodynamics means, for every unit of thermal energy we actually put to useful work, roughly another two end up wasted as heat. How we don’t use energy is just as important to understand as how we use it. Here’s a simplified version of a Sankey diagram from the Lawrence Livermore National Laboratory showing the various inputs to the U.S. energy system and where they end up.

Large-scale waste is unavoidable with a thermal energy system, or one where we mostly burn stuff or split atoms (97% of the inputs in 2019). Burning fossil fuels also generates the carbon emissions causing climate change; so wasted energy is a proxy for the damage being done (apart from nuclear power). In contrast, renewables such as wind, solar and hydropower capture energy directly from infinite sources. While a small amount is lost in transmission, the vast majority is used. So here’s a thought experiment: What if the entire U.S. light-duty vehicle fleet (currently about 270 million cars and trucks) were electrified by 2030 and we expanded wind and solar generation at a rapid pace, while eliminating coal power, at the same time? The result is that we not only end up with a drop in U.S. carbon emissions of almost 30%, but also a far more efficient system overall.

Bug

iOS 11 Is Causing Massive Battery Drain Problems (betanews.com) 158

Mark Wilson writes: A study conducted by security research firm Wandera shows that iOS 11 is causing iPhone and iPad batteries to drain faster than ever -- much faster. The difference between iOS 10 and iOS 11 is anything but minor; batteries can drain in half the amount of time following the upgrade. Wandera's report shows how, on average, an iPhone or iPad running iOS 10 takes 240 minutes of usage to drain the battery from 100 percent to zero. With iOS 11 installed, this number plummets to just 96 minutes -- over twice as fast. Users have also complained about the issue.
Handhelds

Apple Unveils New iPad 989

adeelarshad82 writes "As expected, Apple announced the new iPad complete with a Retina Display, quad-core processor, 4G LTE, and an improved camera. The new iPad will run the rumored A5X processor, which according to Apple will provide four times the performance of the Tegra 3. The revamped tablet will also include a 2048-by-1536 display, apparently the most in any mobile device. And finally with 4G LTE, the new iPad will provide up to 73 Mbps download speeds; partners for which include Verizon, Rogers, Bell, Telus, and AT&T."

Slashdot Top Deals

6 Curses = 1 Hexahex

Working...