2005年12月12日(月) 9時29分
a:atto = 10^-18
f:femto = 10^-15
p:pico = 10^-12
n:nano = 10^-9
μ:micro = 10^-6
m:milli = 10^-3
c:centi = 10^-2
d:deci = 10^-1
da:deca = 10
h:hecto = 10^2
k:kilo = 10^3
M:mega = 10^6
G:giga = 10^9
T:tera = 10^12
P:peta = 10^15
E:exa = 10^18

1 maile = 1760 yards = 1.6093 km
1 yard = 3 feet =0.9144 m
1 foot = 12 inchs = 0.3048 m
1 inch = 2.54 cm
1 AU = 1.4959787066×10^11 m
1 ly (light-year)= 9.46×10^12 km
1 pc = 3.26 ly = 3.09×10^12 km

1 gallon = 4.546 l (in Britain),3.785 l (in USA)
1 barrel = 163.66 l (in Britain),158.99 l (in USA)

1 pound = 16 ounces = 453.6 g
1 ounce = 28.35 g
1 carat = 200 mg

1 dollar = 100 cents ≒ 120.75~120.77 yen(12/12 9:36)

Mobile Phone 

2005年11月14日(月) 10時30分
A mobile phone, also known as a cellphone, smartphone, mobile, or handphone, is an electronic telecommunications device with the same basic capability as a conventional fixed line telephone, but which is also entirely portable and is not required to be connected with a wire to the telephone network. Most current mobile phones connect instead to the network using a wireless radio wave transmission technology. The mobile phone communicates via a network of base stations which are in turn linked to the conventional telephone network.

In Japanese, mobile phone user have exploded since about 10 years ago.

These days,coverage of a mobile phone is about 70%.
(Reference:IT media)


2005年11月14日(月) 9時21分
Cancer is malignant tumor.
We roughly classify cancer into 3 groups.
One of them is due to a blood-forming organ, another is due to a epidermis(it called "cancer" or "carcinoma") and the other is due to a non-epithelial cell(it called "sarcoma").

Each group classifyed more minutely, it more than 50 kinds.
For example, lung cancer, stomach cancer, larynx cancer etc...

Cancer ranks first in the causes of deaths since 1981.→Graph(file type:PDF)
In 2002, the number of cancer deaths was accounting for 31.0% of the total number of deaths.

Reference:National Cancer Center

The Solar System 

2005年11月07日(月) 9時17分
We live on the earth, and the earth belongs to the solar system.
The solar system has the nine planets, the earth is one of them.
They were born 4.6 billion years ago.
The nine planets are Mercury, Venus, The earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
They all go round the sun.

Mercury, Venus, The earth and Mars are called an inner planet.
An inner planet have the surface of the solid.
Jupiter, Saturn, Uranus, Neptune and Pluto are called an outer planet.
An outer planet have the surface of the gas.
However, Pluto have the surface of the solid although it belongs to an outer planet.
Therefore, some astronomy think Plute doesn't belong to an outer planet.
It is interested in the investigation in the future.

This picture show comparison of there sizes.

Reference:SANYO Electric

MP3 Player 

2005年10月31日(月) 9時19分
I often listen to music with my PC.
In PC, music exist as MP3 file.
MP3 file is small file size, so it is convenient to carry.
These days, many MP3 player are sold.
I want to buy an MP3 player.

One of candidates is SV-SD100V of Panasonic.

This use a SD Memory Card as a recoding media.
I already have SD Memory Card and I can use it.

The other is SL-J910 of Panasonic.

This use a CD-R as a recoding media.
I use this as a CD player and a MP3 player.
So I also use it when I listen to music with CD.

My Family's Cars 

2005年10月24日(月) 9時33分
My family have three cars.
One of them is my parents' car, another is my sister's car and the other is my brother's car.
I have been in my parents' and brother's.

My parents' car is Odyssey of HONDA.

They bought the car 10 years ago.
The car carries anything, for example, my family, home appliances, bicycles, etc...

My brother's car is Prius of TOYOTA.

He bought the car this year.
The car is a used car but very clean and comfortable.
That has both engine and motor, because Prius is a Hybrid car.
It is good for the environment.


2005年10月17日(月) 9時17分
Yesterday, I went to Hiroshima Institute of Technology.
I took Systems Administerator Examination.
I didn't study about the exam at all.
Of corse, I have no confidence.
I wait to be announce the result of exam.
I feel tired.


2005年10月03日(月) 9時46分
I am a pen.(`・ω・)b

It is a joke. I'm a normal university student.
Today a new school term began. I will become busy.(´・ω・)

This picture has no means.
« 前の月  |  次の月 »
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
  • プロフィール画像
  • アイコン画像 ニックネーム:dayomon