Science Experiments

The first thing you need to do when planning to host a webinar is to find the right host. Once you figure out which one fits your budget and offers what you need, you can get the rest of your equipment. Many people use web cams, chat rooms, and phone conferencing.

The ideal in webinar conferencing is the host vehicle provider on the web and the range of individuals you are conducting: you have to target some individuals are not internet savvy and it has to be accessible via the phone. The other feature one must consider are you creating a recording to permit other missing set dates and times access content per digital archiving via pre-recorded log-in access.

In a webinar is the format individual based or contributed by a panel of individuals then a boardroom professional setting. It there a feature product or service then implementing these items into a seminar and any software showing graphs, charts and etc inclusions if a visual seminar.

Going Very Cheap

The average seminar can be conducted something as simple as a netbook with a built in Webcam and recording system- it can be distributed via any video subscription and security or privacy can be set as member based only with some free media social websites using their app features. Live feature only with no recording.

Examples are using live chats and business level VIOP services pending again on the volume most often free equates under 10 individuals. Pay per service apps on social media sites can range from $20 and up. Small businesses start-ups are mostly using vehicles such as google+ circles, Skype and etc for small group live chats. all usually under $20 - there are free orgainization small registered business sites that offer up to 100 vehicles on temporary bases. Most these free sites are about recruiting volume numbers of individuals to their site.

Take a sample of inactive solvent say tap water(400 ml).Switch on the light source of the polarimeter.

1. Fill the polarimeter tube with it there should not be any air bubble left in the tube. Rotate the knob (that controls the movement of nicol prism analyser)in clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
2. Record the readings in both sides of the vernier scale.
3. Rotate the knob (that controls the movement of nicol prism analyser)in anti-clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
4. Again, record the readings in both sides of the vernier scale.

Preparing the sugar solution of required concentration weight by weight.

• 10% sugar solution is prepared by adding 10 gram sugar to 80 ml water and making final volume of the solution so formed to 100 ml.

1. Fill the polarimeter tube with 10% sugar solution ,there should not be any air bubble left in the tube. Rotate the knob (that controls the movement of nicol prism analyser)in clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
2. Record the readings in both sides of the vernier scale.
3. Rotate the knob (that controls the movement of nicol prism analyser)in anti-clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
4. Again, record the readings in both sides of the vernier scale.

Subtract:

1. the clockwise reading for tap water from the clockwise reading recorded for 10% sugar solution .
2. the anti-clockwise reading for tap water from the anti-clockwise reading recorded for 10% sugar solution .

Add the results obtained from step 1 and step 2 of the subtract operation and divide by 2. this gives the average value of angular rotation produced by sugar component alone for 10% concentration.

• 5% sugar solution is prepared by adding 5 gram sugar to 80 ml water and making final volume of the solution so formed to 100 ml.

1. Fill the polarimeter tube with 5% sugar solution ,there should not be any air bubble left in the tube. Rotate the knob (that controls the movement of nicol prism analyser)in clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
2. Record the readings in both sides of the vernier scale.
3. Rotate the knob (that controls the movement of nicol prism analyser)in anti-clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
4. Again, record the readings in both sides of the vernier scale.

Subtract:

1. the clockwise reading for tap water from the clockwise reading recorded for 5% sugar solution .
2. the anti-clockwise reading for tap water from the anti-clockwise reading recorded for 5% sugar solution .

Add the results obtained from step 1 and step 2 of the subtract operation and divide by 2. this gives the average value of angular rotation produced by sugar component alone for 5% concentration.

• 2.5% sugar solution is prepared by adding 2.5 gram sugar to 80 ml water and making final volume of the solution so formed to 100 ml.

1. Fill the polarimeter tube with 2.5% sugar solution ,there should not be any air bubble left in the tube. Rotate the knob (that controls the movement of nicol prism analyser)in clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
2. Record the readings in both sides of the vernier scale.
3. Rotate the knob (that controls the movement of nicol prism analyser)in anti-clockwise direction until you get a critical region in which illumination of the central band as observed from the eyepiece changes from slight brightness to complete darkness or vice-versa.
4. Again, record the readings in both sides of the vernier scale.

Subtract:

1. the clockwise reading for tap water from the clockwise reading recorded for 2.5% sugar solution .
2. the anti-clockwise reading for tap water from the anti-clockwise reading recorded for 2.5% sugar solution .

Add the results obtained from step 1 and step 2 of the subtract operation and divide by 2. this gives the average value of angular rotation produced by sugar component alone for 2.5% concentration.

TO CALCULATE THE SPECIFIC ROTATION OF THE CANE-SUGAR .

• Plot the graph with concentration on x-axis and angular rotation produced by sugar component alone for different concentrations taken on y-axis.
• slope of the straight line so obtained on the graph divided by length of polarimeter tube gives the specific rotation of the cane sugar.
• note the temperature at which experiment is performed.

Yes