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Millikan's Oil Drop Apparatus
Model: HO-ED-EM-01
Price : $ 2,365.00

Holmarc's Millikan oil drop apparatus (Model No: HO-ED-EM-01) is modernized version of classic set-up used to find out electron charge. The apparatus makes use of CCD camera along with computer screen for convenient viewing of oil droplet. Measurements of the droplets are also taken from display screen using a software module. Control of high voltage power supply across the electrode is made easy by having a digital display on the front panel.

The apparatus consists of two horizontal metal discs placed 10mm apart in a closed chamber. Non-volatile oils are used for the experiment. A bright LED is used for illuminating the droplets inside the chamber in order to get a clear view.

The significant difference in our setup is in the imaging system used for the observation of droplet movement. We use USB 2.0 camera which can be directly connected to the PC to monitor the droplet movement and can measure the velocity of the droplet with the help of Holmarc's dedicated software. This makes the measurements much easier and eliminates the need for conventional telescope and stopwatch system. A variable power supply of 0-2KV is used for conducting the experiment. The temperature inside the drop viewing chamber can be monitored through the front panel display system.

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Experiment

    To determine the charge of an electron by Millikan's Oil Drop Method

Charge of an electron can be obtained from this relation,

q   =   (  (  V2  /  V1  )  +  1  )  [ (  4  /  3  π r3  )  (  ρ  -  ρair  )  g d  ]  /  V

V1   -   Terminal Velocity

V2   -   New Terminal Velocity

r   -   Radius of the Drop

ρ   -   Density of Liquid

ρair   -   Density of Air

g   -   Acceleration due to Gravity

d   -   Distance between the Plates

V   -   potential Difference

Scope of Supply

Oil drop Control Unit

Model No: ED-EM-01-OCU
Chamber Voltage : 0 - 2 KV
Quantity : 1 no.

Droplet Chamber

Model No: ED-EM-01-DC
Quantity : 1 no.

Top Charging Plate

Model No: ED-EM-01-TCP
Material : Cartridge Brass
Diameter : 76.2 mm
Height : (Block, B1) & 8 mm (Block B4)
Quantity : 1 no. each

CCD Camera

Model No: ED-EM-01-CCDC
Resolution : Selectable (320 - 1280 pixels)
Connectivity : USB 2.0
Quantity : 1 no.

Camera Lens Assembly

Model No: ED-EM-01-CLA
Magnification : 30 X
Quantity : 1 no. each

LED Illumination Unit

Model No: ED-EM-01-LIU
Wave length : 589 nm
Optical power : Black anodized
Quantity : 1 no.

Atomizer

Model No: ED-EM-01-AM
Magnification : 30 X

Accessories

Measuring Scale
Focusing Needle
Sample Liquid
Netbook PC (Optional)
Instruction Manual

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Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.

ISO 9001:2015 Made in INDIA

Get in Touch

    B.7., H.M.T. Industrial Estate H.M.T. P.O, Kalamassery, Kochi Kerala, India - 683 503
   +91 920-719-7772 / 6 / 1
   sales@holmarc.com
   Mon - Sat : 9 am to 5 pm

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