Jmol-Application/C4/Symmetry-and-Point-Groups/Khasi

Time	Narration
00:01	Pdiang sngewbha sha kane ka tutorial halor Symmetry and Point Groups haka Jmol.
00:06	Ha kane ka tutorial, ngin pule ban:
00:08	Dro lain, kata, axis lyngba ki atom ha u molecule.
00:12	Spin bad rotate ïa u molecule shilynter jong u axis.
00:17	Dro ïaka plane lyngba ki atoms ha u molecule.
00:21	Bad pyni ïaka jingbuh kyrdan jong ki point group.
00:25	Ban bud ïa kane ka tutorial, phi dei ban don ka jing tip ïaka undergraduate Chemistry bad tip bha shaphang ka rukom treikam naka Jmol window.
00:35	Lada em, peit ïa ki tutorial ba kum kane kiba don haka website jong ngi.
00:39	Ban record ïa kane ka tutorial, nga pyndonkam ka:
00:42	Ubuntu Operating System version 14.04
00:46	Jmol version 12.2.32
00:50	Java version 7 bad * Mozilla Firefox browser 35.0.
00:57	Bunsien, ki symmetry haki molecule la batai ha ki kyntien jong ki symmetry elements kum:
01:03	Axis jong ka symmetry
01:05	Plane jong ka symmetry Center jong ka symmetry ter ter.
01:09	Ngin pyndonkam ka Jmol ban display kine ki symmetry element ha u molecule.
01:14	To ngin sdang ïa kane ka tutorial dakaba dro u C3 rotational axis lyngba ki atom haka model jong u methane.
01:22	Nga la plie lypa ïaka Jmol window.
01:25	Click haka modelkit menu ban ïoh ïaka model ball and stick jong u methane haka panel.
01:31	Label ïaki atom ha u methane molecule dakaba pyndonkam ïaka Display menu ha u tool bar.
01:37	Click ha ka Display, hiar sha Label bad click ha u jingjied Number.
01:43	Baroh ki atom ha u methane molecule lah ai number.
01:47	Ngi donkam ban thoh ki command ha ka console ban dro ïaki laiñ bad planes lyngba ki atom.
01:53	Ban plie ïa ka Console, click haka File menu.
01:57	Hiar sha ka Console bad click haka.
02:01	Ka Console window ka plie haka screen.
02:04	Ngin pyndonkam ïa ka kyntien draw haka command line ban dro ïaki laiñ bad plane.
02:10	Ka jingtip ba bniah halor ka Jmol script commands ka don hakane ka website.
02:15	Plie ïaka website ha uno uno u browser.
02:19	Ka web-page ka plie ryngkat bad ka list jong ki keyword bala pyndonkam na bynta ban thoh ki script command haka Jmol.
02:26	Hiar shapoh bad click haka kyntien draw haka list.
02:31	KA page ka plie bad ki jingbatai bniah shaphang ka draw keyword.
02:36	KA rukom pynbeit kyntien ba kyllum na bynta ka draw command la ai ha khlieh jong ka page.
02:42	La pynbud ïa kane da ka thup jingtip ba ïadei bad ka jingpyndonkam ïaka keyword.
02:47	To ngin leit phai biang sha ka Jmol panel.
02:51	Nga pyndonkam ka Kmag screen magnifier ban pyni heh iaka console window.
02:55	Ban dro u laiñ u ba thew ïa u C3 rotational axis,
02:59	type ïa ka command bala ai harum ha u dollar prompt, ha ka console.
03:04	U command line u sdang da ka kyntien “draw”, bad la pynbud pat da ka object ID.
03:10	U Number 250 ha u command line u thew ïaka jingjrong jong u laiñ.
03:15	La bud pat ïa kane da ka jaka shong jong u laiñ.
03:18	Hapoh ki bracket, atom number equal to 1 bad atom number equal to 2. Ñion Enter.
03:26	Khmih thuh haka panel. U laiñ ba ïaid lyngba ki atom 1 bad 2 la dro ha u model jong u methane.
03:33	Une u laiñ u long mynta kum u axis naka bynta ban pynshad.
03:37	Ngi lah ban dro palat ïa u wei u laiñ ha ka model bala ai.
03:41	Ban dro u C2 rotational axis, type haka console ïaka command bala ai harum.
03:47	Ha kane ka command, ki number haki bracket ba khun ki kdew ïa ki Cartesian coordinates naka bynta u line
03:54	bala pynbud daka command ban batai ïaka rong jong u laiñ. Ñion Enter.
03:59	Mynta haka panel, ngi don u methane ryngkat uC2 bad C3 rotational axes.
04:05	Ban rotate ha shi lynter u line 1, kata u C3 axis, type ïaka command harum:
04:12	rotate $line1 60 (rotate space dollar line1 space 60).
04:18	U number 60 u pyni ïa ka degree jong ka rotation. Ñion Enter.
04:24	Khmih thuh ïaka jingshad shilynter u line1.
04:27	Ban spin ïa u molecule shilynter u line1, type ïa ka command harum:
04:32	"spin $line1 180 60" (spin space dollar line1 space 180 space 60).
04:39	U number 180 u thew ïaka degrees jong ka rotation bad u 60 u thew ïaka speed jong ka rotation. Ñion Enter.
04:48	Haka panel, ngi iohi ia u model methane uba spin shilynter u line1, kata u C3 axis.
04:55	Kum ka assignment-Dro u laiñ uba pynï ia u C3 axis of symmetry, ha u model jong u ethane
05:02	bad spin ïa u model shilynter jong u C3 axis.
05:06	Phai biang sha ka Jmol panel.
05:08	Ngi lah ruh ban dro ïaka plane kaba ïaid lyngba ka shi kynhuh jong ki atom ha u molecule.
05:12	ban leh kumta, nyngkong delete ïa u laiñ ha u model methane dakaba type ïaka command ba harum. "draw off" (draw space off). Ñion Enter.
05:24	Ban dro ïaka reflection plane kaba ïaid lyngba ki atom 1, 2 bad 3 jong u methane molecule:
05:31	type ïaka command harum haka console.
05:35	U Number 300 haka command u kdew ïaka size jong ka plane. Ñion Enter.
05:41	Khmih thuh ïaka reflection plane kaba iaid lyngba ki atom 1, 2 bad 3 ha u methane molecule.
05:49	Ban dro ka reflection plane ba –ar lyngba ki atom 1, 4 bad 5:
05:55	Haka console, ñion u up-arrow key bad edit ïaka command kumba harum.
06:01	Edit plane1 sha plane2 bad atomno2 sha 4 bad atomno3 sha 5.
06:12	Bad ruh, ban pynkylla ïaka rong jong ka plane, type ïaka command harum:
06:17	"color $plane2 blue" (semicolon color space dollar plane2 space blue). Ñion Enter.
06:24	Haka panel, ngi iohi ar tylli ki reflection planes ha u methane molecule.
06:29	Pyndonkam ka Jmol, ngi lah ruh ban pyni ka jingphiah kyrdan u point group naka bynta u methane kum harum.
06:36	To ngin pynkhuid noh ïaki plane bala dro ha u methane molecule, haka panel.
06:41	Haka console, type: draw off (draw space off). ñion Enter.
06:47	Ban pyni ïa baroh ki symmetry element ba lah na bynta u methane: type ïa ka command harum haka console.
06:54	"draw pointgroup" (draw space pointgroup). Ñion Enter.
06:59	Ngi iohi ïaki symmetry elements jong u methane bala pyni haka panel.
07:04	Ban shem ïa ka jingbuh kyrdan point group na bynta u methane, type ïaka command harum: "calculate pointgroup" (calculate space pointgroup). Ñion Enter.
07:14	Td,ka point group jong u methane molecule, la pyni haka console.
07:20	Sa kawei ka jingpyni nuksa ba bha tam na bynta ka jingpyni ïa ka point group ka dei allene.
07:25	Ngi lah ban dro ïaka structure jong u allene, haka panel, pyndonkam da ka modelkit menu. Lane, ngi lah ruh ban download ïaka structure jong u allene na ka chemical structure database.
07:37	Lada phi long connect sha ka internet - click haka File menu, hiar sha Get Mol bad type “allene” haka text-box. Click ha OK.
07:48	Ban pyni lut ia baroh ki possible symmetry elements na bynta u allene:
07:52	ñion u up-arrow key ha u dollar prompt, haka console, tad ynda phi ïoh ïa kane ka command:
07:59	draw pointgroup . ñion Enter.
08:02	Khmih thuh ïaka panel. Ngi iohi ïa baroh ki possible symmetry elements na bynta u allene.
08:09	Ban ioh ïa ka jingphiah kyrdan point group na bynta u allene -
08:12	Sa shisien, haka console, ñion ïa u up-arrow key tad ynda phi ioh ïaka command "calculate pointgroup". Ñion Enter.
08:21	Ka point group classification na bynta u allene, kata u D2d, la pyni haka Console.
08:28	Kumjuh ruh, phi lah ban download ki molecules jong ka jingkwah jong phi bad kheiñ ïaka point group jong ki.
08:34	To ngin Batai lyngkot. Ha kane ka tutorial, ngi la pule:
08:38	Ban dro ki laiñ, kata, C2 bad C3 rotational axes lyngba ki atom ha u methane molecule.
08:45	Spin bad rotate u molecule shilynter u axis.
08:49	Dro ka reflection plane lyngba ki atom ha u methane molecule.
08:54	Bad pyni ïa ka point group classification pyndonkam ki nuksa jong u methane bad allene.
09:01	Kum ka assignment- Dro ka reflection plane haka model jong u dichloromethane
09:07	bad wad ïa ka point group classification na bynta u ammonia bad benzene.
09:12	Kane ka video Ka batai lyngkot ïaka Spoken Tutorial project.
09:15	Lada phim don ka bandwidth ba biang, phi lah ban download bad peit ïaka.
09:20	Ngi pynlong workshop dakaba pyndonkam ki spoken tutorials bad ai certificates. sngewbha thoh sha ngi.
09:27	Ka spoken-tutorial project la bei tyngka daka National Mission on Education Lyngba ka ICT, MHRD, Sorkar India.
09:33	ïa kane ka script la pynkylla sha ka ktien Khasi da I Hezekiah Lyngdoh na Shillong. Khublei ba phi la ïasnohlang.

Contributors and Content Editors

Hezekiah2016