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標題: 無意中發現試槍汽水罐的異像............ [打印本頁]

作者: Tango1997 時間: 12-4-2011 20:06 標題: 無意中發現試槍汽水罐的異像............

小弟發現左一樣自以為理所當然的事........

成日用泥試槍既汽水罐以小弟認知除左個罐身D油柒外應該成個係鋁質,
但修理電動槍時,拿摩打經過過空罐,個罐有D移動,我以為自己"老花"

原來唔係,個鋁罐一定有鐵既成份 ,小弟覺得質量經已變晒
所以試槍都係用番測速機

可樂,忌廉,就對磁鐵無反應

唔知係小弟鄉下仔定大家一早知呢??
話聲過我聽.............真係唔知既師兄..........等我得個知字....thank you大家

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作者: Elf 時間: 12-4-2011 20:15

any ferromagnetic material will exhibit such pheonomenal, and not only iron will do that, but also nickel and cobalt. the can is not made entirely from aluminium, but aluminium alloy, which probably includes nickel for higher durability

作者: Snowolf 時間: 12-4-2011 22:10 標題: 回覆 2# 的帖子

rich of chemistry knowledge

作者: Tango1997 時間: 12-4-2011 23:49

引用:

原帖由 Snowolf 於 12-4-2011 22:10 發表
rich of chemistry knowledge

小弟智識有限,除左鉄還有什麽物質對磁石有反應?

另還想請教磁石本身係乜野物質?thank you c hing

作者: sam524 時間: 13-4-2011 00:06

引用:

原帖由 tango1997 於 12-4-2011 23:49 發表

小弟智識有限,除左鉄還有什麽物質對磁石有反應?

另還想請教磁石本身係乜野物質?thank you c hing

其實磁石可以用大部份金屬做...如銅/鐵
但要先做手腳磁化佢...

作者: Tango1997 時間: 13-4-2011 00:40

引用:

原帖由 sam524 於 13-4-2011 00:06 發表

其實磁石可以用大部份金屬做...如銅/鐵
但要先做手腳磁化佢...

師兄磁化係唔係：橋:住碌金屬通電個隻？Thank you

作者: rexcheung 時間: 13-4-2011 01:58

用電線'橋'位碌金屬果種，叫電磁鐵，要通電先有磁力。例：廢車場吊車果舊金屬。

作者: Tango1997 時間: 14-4-2011 21:38

引用:

原帖由 rexcheung 於 13-4-2011 01:58 發表
用電線'橋'位碌金屬果種，叫電磁鐵，要通電先有磁力。例：廢車場吊車果舊金屬。

師兄可能誤會左

小弟講個一個"橋"住鉄棒通電,另鉄棒自身磁化,好似教育電視科學科造個一個實驗咁樣

師兄你講個一種小弟都知道,就好似在大工字鉄鑽窿個一種流動鑽床,底坐通電就會吸住條工字鉄,又或者係屋村大門磁力鎖個種

小弟其實係想知到究竟除左鐵,還有乜金屬會對磁有反應,還有磁石究竟係唔係天然礦物既一種呢

作者: Hkpolice-Psu 時間: 15-4-2011 10:29

引用:

原帖由 Elf 於 12-4-2011 20:15 發表
any ferromagnetic material will exhibit such pheonomenal, and not only iron will do that, but also nickel and cobalt. the can is not made entirely from aluminium, but aluminium alloy, which probably i ...

entirely from aluminium will be very expensive.

and i've discover somehow there have some bottom of softdrink can are much harder than others.

作者: nishi 時間: 15-4-2011 10:37

引用:

原帖由 Hkpolice-Psu 於 15-4-2011 10:29 發表

entirely from aluminium will be very expensive.

and i've discover somehow there have some bottom of softdrink can are much harder than others.

seems Nestea's can is much harder than the one of Pepsi...
my gun cannot break the bottom of the Nestea can but can pierce the Pepsi can's bottom easily...

作者: Hkpolice-Psu 時間: 15-4-2011 10:41

引用:

原帖由 nishi 於 15-4-2011 10:37 發表

seems Nestea's can is much harder than the one of Pepsi...
my gun cannot break the bottom of the Nestea can but can pierce the Pepsi can's bottom easily...

not only that kinds of different, i am talking about between the normal coke,fanta and zero coke etc.

the same product under the swire, but different can.

作者: nishi 時間: 15-4-2011 10:52

引用:

原帖由 Hkpolice-Psu 於 15-4-2011 10:41 發表

not only that kinds of different, i am talking about between the normal coke,fanta and zero coke etc.

the same product under the swire, but different can.

I see, I was just saying 雀檸...

作者: Elf 時間: 15-4-2011 11:26

引用:

原帖由 tango1997 於 14-4-2011 21:38 發表

師兄可能誤會左

小弟講個一個"橋"住鉄棒通電,另鉄棒自身磁化,好似教育電視科學科造個一個實驗咁樣

師兄你講個一種小弟都知道,就好似在大工字鉄鑽窿個一種流動鑽床,底 ...

there are naturally occurring magnetic minerals, like iron ii/iii (fe2o3/fe3o4)
as well as some transition metal tend to do okay
but if you need a strong magnet you have to put them through magnetisation.

oh chemistry... i've forgotten it all

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