dye

估下咋。

係唔係無錢/時間買新衫？

dye

其他果D容易髒呀。又唔適合戶外登山活動。
大褸又熱。

dye

I think it may have to do with the fact the people in the ancient world are illiterate.  They do not have a menu and cannot read the menu.

It is much easier to order this way.

dye

回復 367# 沙文

http://en.wikipedia.org/wiki/Heat_capacity

See the table, the difference is only about 4:1

I think it is something else on top of it.  I need a bit of time to remember it.  The lesson is taught in highschool science class at around grade 10-11ish.

Found it:

I think you mean thermal conductivity.
http://en.wikipedia.org/wiki/Thermal_conductivity

Water to air = 0.6:0.025

About 24 times.
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And Ms. Cat is perfectly correct scientically.  It is taught in elementary school and also featured on TVB game show for elemetary school kids.

dye

I have an elemnetary school classmate call January.  She is a smart girl.

I also remember one of my classmate called March.

dye

回復 400# 抽刀斷水
進化

dye

你無聽過CANCER都係進化出黎咩？

http://evolution.berkeley.edu/evolibrary/news/071001_cancer

在教徒頭中出現突變，再配合適當環境………

dye

Sorry, I do not believe what the web site is saying.

Here is an experiment Sherman can do and help us understand the question:

Place the candle further and further away from the hair blower and see the effect.  (Test the air pressure.  The further the wind source, the smaller the low pressure.)

Use this distance, change the temerature of the wind blowing, perhaps by using the fridge and heating element of the dair dryer.  (Test for temperature.  Is it true that people in Arctic has an easier time blowing out candle than say, African?)

Lastly, to proof what the web site is correct, it should be impossible to blow out a lighter because you can't "blow off" the flame.  So change the fire source and try it again to see if there is any difference!

dye

Are you sure the electric heating element of the hair dryer will "burn" any oxygen away?  How about a safer way with air from freezer, or air from top of a block of ice?  If temperature is an issue, cooler air should be able to do it better, right?

Actually I found an even more likely answer, it fits with all observations I seen so far in my life:

I think the wind blow the chain reaction of the fire away.  In order for the flame to continue, the last reaction must be in proximity with the next reaction in order to transfer the heat.  

With the air moving so fast, it outpace the reaction front.

This is observable as the wind gets stronger and stronger, the flame moves away from the head.  At certain wind speed, the flame will bound to be too far from the fuel source.

**  I think the temperature idea is correct only concerning candle because of the way the fuel is supplied (vapourization of the wax).  It is incorrect in the general sense.

dye

請問送貓草或薄荷草做結婚周年禮通常有乜後果?

又，香港邊度買?

dye

No, not a cat.  My wife is not a cat.

I mean the whole plant with roots and pot.

dye

Ok, thanks for the advice

dye

Reporting, the result is positive.  The gifts are recived positively.

dye

Who else? (Space filler)