Microscope

Microscope

The first microscope was invented by Antony Van Leeuwenhook. This is a very simple microscope with very limited ability to magnify objects. Recently, several types of microscopes have been invented, like: Light microscopes, phase contrast microscope, and electron microscope.

The microscope Components

The light microscope wiil have the following components:
a.Optical components included
1. Mirror is used to receive light of lamp and reflect it to the condenser.
2. Condenser functions to converge light reflected by the mirror. Within this condenser there is diaphragm that functions to adjust the amout of light exposed to the preparations on the stage of microscope.
3. Objective lenses with the ability to magnify object.
4. Ocular lens consist of complex lenses throught wich you observe the object. The magnification power of these lenses ar either 4x or 10x(normally).

b. Mechanical Components
1. Stage with preparation: this is the palace where you put your preparations to be observed.
2. Revolver: This part is the holder of Objective lenses.
3. Macrometer knob is used to focus the objects on the stage.
4. Micrometer knob is used to focus the objects ( to adjust the distance between objective lenses and the objects smoothly).

Tata Nama Senyawa

Tata Nama Senyawa

A. Senyawa Biner
yaitu senyawa yang terdiri dari 2 jenis unsur.
Senyawa biner terdiri dari 2, yaitu :
1. Senyawa Biner non logam + non logam
sifat: Selalu di beri akhiran -ida
Bila dapat membentuk lebih dari satu senyawa maka jumlah atomnya disebutkan dengan bahasa latin.
contoh: 1. N2O => Dinitrogen Monoksida
2. CO => Karbon Monoksida
2. Senyawa Biner logam + non logam
sifat: - Selalu di beri akhiran -ida
- Nama logam disebutkan terlebih dahulu
- Tidak disebutkan jumlah atomnya
contoh: 1. Al2O3 => Alumunium Oksidan
2. NaCl => Natrium Klorida