SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
REVERSE ENGINEERING
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hatari
Getter
Every pump in this batch stops working the moment the tube is sealed off — and a sealed vacuum immediately begins to fill again, as gas seeps from the glass, the metal and the joints. A radio valve or a lamp would go soft within weeks. The getter solves it chemically rather than mechanically: a small quantity of a very reactive metal, usually barium, is flashed onto the inside of the envelope after sealing, depositing a mirror-bright film that chemically absorbs stray gas molecules as they appear. It is a pump with no moving parts, no power supply and no connection to the outside — it works silently for the tube's entire life, and the silver patch inside every old valve is it.
Juu
4 hours 30 minutes
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.