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getting out into nature is now more important | |
Sand is a very effective medium for retaining heat over a long period, storing power for months at a time. And there are other benefits too. "The sand has a very long lifetime: it can heat up and cool off any number of times," says Kivioja. "It will get denser after a while so needs less space. At that point we can add more sand." | |
ผู้ตั้งกระทู้ getting out into nature is now more important :: วันที่ลงประกาศ 2022-11-09 13:10:18 |
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