4 ms·
Since 1990 the energy density if lithium ion has has increased by a factor of about 4, and the cost had reduced by a factor off about 6. While keeping in mind t
by gameswithgo 6y ago
Since 1990 the energy density if lithium ion has has increased by a factor of about 4, and the cost had reduced by a factor off about 6. While keeping in mind that consumer lithium ion itself was quite a breakthrough in terms of energy density in the first place.
Both of these metrics are still improving too.
- JoshuaDavid 6y agoI dunno about enamel reconstruction (though I was under the impression that materials used to _replace_ tooth enamel have gotten enormously better in the last few decades to the point where your fillings will wear down slower than your teeth), but life expectancy has also been slowly increasing over the past few decades, and a significant fraction of that comes from people staying relatively healthy for longer.