The sun visor can dim the future "Starlink" satellites
Space will use sun visors to dim the "Starlink" satellites and mitigate the risk of light pollution.…
Space will use sun visors to dim the "Starlink" satellites and mitigate the risk of light pollution.…
The scientific community has been long time interested in boron nitride because of its unique properties - sturdy, ultra-thin, transparent, insulating, lightweight and thermally conductive.…
Silicon nitride. A cleaner alternative is spark plasma sintering, where heating is conducted rapidly (seconds) by passing pulses of electric current through the compacted powder. Dense silicon nitride compacts have been obtained by this technique at ...…
After entering 2021, lubricating graphite have risen sharply. At present, the price increase in the domestic chemical industry has become an overwhelming trend. The price of some products has increased by more than 1000usd per ton year-on-…