Ushirikiano
SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Siphon Tube: Glass Tube Bent with Drawn-Down Ends (Faraday, 1830)
A glass siphon for drawing clear liquid off a settled deposit, which Michael Faraday (1830) rated far better than pouring. He bends a glass tube about 0.3 inch inside and 22 inches long so that one leg is about 2 inches longer than the other, and draws both ends down to about 0.2 inch.
The narrow ends hold the liquid in while one end is closed with a finger; the wide body lets it run fast.
Source: M. Faraday, Chemical Manipulation (1830), §550, pp. 241-242. Picture: his text and figure.
Kati
Unknown
Maagizo
1
1
Read Faraday
Read Faraday
"Let a piece of glass tube, about 0.3 of an inch internal diameter, 22 inches in length, and of sufficient thickness to bear ordinary laboratory work, be bent at the blow-pipe table, so that one limb shall be about two inches longer than the other; the extremities should be contracted at the lamp, until about 0.2 of an inch in diameter."
2
2
Cut the tube
Cut the tube
Take glass tube about 0.3 in. inside diameter, thick enough for ordinary laboratory work, and cut 22 in. off it: make a deep mark round it with the edge of a sharp three-square file, then break it like a stick, pulling the hands slightly apart (§1152). Wall thickness in figures is not given (unknown).
Vifaa kwa hatua hii:
Mrija wa kioo1 22 in.Zana zinazohitajika:
Tupa (Tupa ya Mkono)3
3
Bend it
Bend it
Bend the tube in the flame of the blow-pipe table so that one leg is about 2 in. longer than the other. For so sharp a bend, do not bend it all at one spot: heat and bend one part as far as it will go without narrowing the bore, then heat the next part and carry the curve on until the legs are close (§1160).
Zana zinazohitajika:
Kichomeo cha mezani cha kupuliza kioo4
4
Draw down the ends
Draw down the ends
Heat each end and pull it along its length so that it lengthens and narrows (§1166), until the opening is about 0.2 in. across.
Zana zinazohitajika:
Kichomeo cha mezani cha kupuliza kioo5
5
Use it
Use it
Hold the siphon upside down with the short leg higher, fill it with water from Faraday's dropping-bottle (a wash bottle does the same job), holding its beak against the side of the opening so no air bubbles are caught; close the long leg with a finger and fill the short leg too. Turn it over, put the short leg into the liquid and lift the finger: the clear liquid runs out. A finger on the outer end slows or stops it; keep the inner end clear of the deposit (§§550-551).
Zana zinazohitajika:
Chupa ya kuoshea ya maabaraVifaa
1- 1 22 in.Kishikilia Nafasi
Zana Zinazohitajika
3- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
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.