Colors

Hidup penuh warna.....
Bagaimana warna-warna itu dapat kita lihat?

Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum labeled "visible light". This "visible light" corresponds to a wavelength range of 400 - 700 nanometers (nm) and a color range of violet through red. The human eye is not capable of "seeing" radiation with wavelengths outside the visible spectrum. The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red. Ultraviolet radiation has a shorter wavelength than the visible violet light. Infrared radiation has a longer wavelength than visible red light. The white light is a mixture of the colors of the visible spectrum. Black is a total absence of light.

Chemistry In Our Daily Life

Have u ever eat Ice Cream?
Ofcourse u did ,Right?
Para penjual es puter biasanya menaburkan garam dapur pada es batu disekeliling wadah es puternya? Mengapa demikian?
Salt is used to make homemade ice cream. Salt also used on sidewalks and roads, used to melt the ice and snow and keep it from refreezing.In both cases, the salt works by lowering the melting or freezing point of water. The effect is termed 'freezing point depression'.
Penambahan garam justru akan membuat es meleleh, es yang ditambah garam akan memiliki titik beku yang lebih rendah daripada air murni. Sehingga membutuhkan panas yang lebih untuk meleleh. When salt is put on ice, it dissolves on the ice's watery surface. In the process, heat is absorbed. The salt also causes the ice to melt quickly—another process that absorbs heat from the surroundings.So, es krim yang berada disekitar es yang ditaburi garam tersebut dapat membeku.

Eat Metals to Keep Our body Healthy

Do you know that metals is very important to our body? Now ,paling tidak telah diakui 14 elemen renik yang berperan esensial bagi kehidupan hewan dan manusia (Cotzias GC, Miller ST dkk, 1976), yaitu besi, iodium, tembaga, seng, mangan, kobalt, molibdenum, selenium, kromium, nikel, timah, silikon, dan vanadium.
Those element are needed to metabolism process in our body....
To be continued....

Eat Metals to Keep Our body Healthy

Do you know that metals is very important to our body? Now ,paling tidak telah diakui 14 elemen renik yang berperan esensial bagi kehidupan hewan dan manusia (Cotzias GC, Miller ST dkk, 1976), yaitu besi, iodium, tembaga, seng, mangan, kobalt, molibdenum, selenium, kromium, nikel, timah, silikon, dan vanadium.
Those element are needed to metabolism process in our body....
To be continued....