All posts by Einat

NeuBlog – Light

Light sensor brought to light          

05/26/2016   

One of the first sensors I worked with was the light sensor. It is amazing how this sensor can be used in so many fields of science. I started by creating experiments that teach the most basic principles of light.

The Light and Dark Colors experiment demonstrates the principle of light reflection and absorption. When visible light (that contain all the colors), completely reflects from an object, this light appears white. When the object completely absorbs all the light, it is recognized as black. This was done by projecting light on white, grey and black papers and measuring the reflected light.  One of the responses I received from teachers is that young students finally understood why it is not a good idea to wear a black shirt on a sunny day. 

 

NeuBlog light1

Projecting Light on a white paper and measuring the reflected light.

 


The second experiment I want to tell you about is a really fun one, Colors of Light. In this experiment, you combine color filters and colored flashlights in order to detect the light coming through the filters. As an example, a red filter transmits (and reflects) mostly red light and absorbs the rest, while a blue filter does the same with blue color. So what will be the light intensity if we place a red filter on a blue flashlight? Conduct the experiment and you’ll see (and measure of course!).

 

NeuBlog2Colorless flashlight with red filter

 

At the end of the experiment, you will find some fun educational activities you can do with the colored flashlights and filters (those items are included in our Light kit).


What’s great about this sensor is that it has three different ranges of light intensity. This way, you can choose the best range according to your experiment. When measuring light outdoors I like to use the 0 to 150,000 lx range (like in the Rayleigh Scattering experiment). When I measure light in a dim room (like in the Light and Shadow experiment) I use the 0 to 1000 lx range. For the rest of the experiments I use the middle range (0 to 6000 lx).

Sensors that work great along with this sensor:
UVA
UVB
Temperature

 

Utility kit UTL-kit

Utility Kit (UTL-KIT)

For Chemistry, Biology, and Environmental Science

NeuLog logger sensors greatly improve teaching of chemistry, biology and environmental science. Along with the NeuLog Utility accessories, a wide variety of topics can be practically studied. The utility accessories are fully customized for the use of logger sensors, and for a high quality learning experience.

The kit consists of:

Utility stand, Right angle clamp, Extension clamp, Black crocodile clip cable, Red crocodile clip cable, Four safety goggles, Twelve Pasteur pipettes, Four boiling stones, Burette, Alcohol lamp, Four 50 ml beakers, 100 ml conical flask, Forty cotton pads, 50 ml syringe, Carbon pencil, Aluminum foil strip, Iron nail, Copper cable, Wash bottle, Scissors, Ruler, Six 18 X 150 mm tubes, Six Perforated caps, Funnel, Plastic container, Sellotape, Six sample containers, Dialysis tubing, Black marker, 250 ml beaker, Two clips, 10 ml graduated cylinder, Tube rack.

NeuLog sensors required (not included):

* some of the experiments require a Battery module.

 

Utility kit main

 

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      Utility kit experiments: 

      Chemistry:

    Producing Electricity C-1     Ions in Solution C-3
               
    Gas Solubility C-6     Titration of a Strong Acid and a Strong Base C-10
               
    Evaporation C-17     Endothermic and Exothermic reactions – part 1 C-18
               
     Beer-Lambert law C-28      Boyle’s Law C-30
               
     Color Absorption C-31        
               

      Biology:

    Diffusion in Biology B-2     Enzyme Activity B-7
               
    Respiration of Germinating Seeds B-11     Emotional Stress Measurement    B-37
               
    Monitoring Yeast Growth B-38        
               

      Environmental Science:

     Properties of Sea water and Fresh water E-1     Measuring Dew Point E-5
               

Sound kit SND-KIT

Sound Kit (SND-KIT)

For Physics

Sound is a mechanical vibration that travels through matter as a waveform. It is transmitted as compression or transverse waves. A sound wave like other types of waveform has wavelength, frequency, velocity and amplitude. Sound waves are a very abstract concept. It is difficult for students to grasp the relation between generated sound and wave’s propagation. With this kit, students measure sound waves generated by tuning forks and a recorder and also isolate sound using different materials. The kit contains equipment to produce sound and measure it through a sound sensor.

The kit consists of:

426 Hz tuning fork, 480 Hz tuning fork, 512 Hz tuning fork, Two resonance boxes (wooden boxes), Hammer, Recorder (musical instrument), Sound isolation sponge, Felt, Ten paper towels, Sound isolation box, Egg tray, Sellotape.

NeuLog sensors required (not included):

  Sound kit main

      Sound kit experiments: 

    Sound Beats P-22     Exploring Sound P-26 
               
    Sound Isolation P-29     Sound waves P-33 
               

Pulley kit PUL-KIT

Pulley Kit (PUL-KIT)

For Physics

A pulley is a grooved wheel firmly attached to an axle. A rope or a cable fits into the groove and passes over the wheel. A fixed pulley is fastened to one spot. The fixed pulley gains nothing in force or distance, but it changes the direction of the force. A movable pulley moves along a rope. It decreases the force but it must act through a longer distance. A compound pulley (also known as a block and a tackle) is the combination of fixed and movable pulleys. The fixed pulley changes the direction of the force and the movable pulley decreases the applied force. The NeuLog pulley kit along with the force logger sensor lets the students explore various options of pulley arrangements.

The kit consists of:

35 cm track, Two track legs, Two 20″ rods, Two track riders, Two boss heads, Two 100 g slotted masses, Three 50 g slotted masses, Slotted mass hanger, Rod with pulley (perpendicular), Pulley with hook, Thread.

NeuLog sensors required (not included):

  Pulley kit main

      Pulley kit experiment: 

    Pulley System P-8        
               

Oxygen and carbon dioxide kit CGG-KIT

Oxygen and Carbon dioxide Kit (CGG-KIT)

For Chemistry and Biology

This kit together with an oxygen sensor allows students to investigate the oxygen concentration needed to sustain combustion. It enables the student to clarify the common concept that combustion ends when free oxygen concentration approaches zero and to prove that it is wrong.

Using the Gas generator, CO2 is generated and brought in contact with water, which simulates acid rain formation. The pH of the water changes and can be monitored using a pH logger sensor.

The photosynthesis chamber is designed to contain plants or other organisms. It also has special holes for oxygen and CO2 NeuLog sensors in order to measure oxygen and carbon dioxide changes of respiration and photosynthesis.

The kit consists of:

Gas generator, Cover (glass), Candle base, Candle, Photosynthesis chamber, CO2 sensor opening stopper, Oxygen sensor opening stopper.

NeuLog sensors required (not included):

  Oxygen and carbon dioxide kit main

      Oxygen and Carbon dioxide kit experiments: 

    Combustion C-5      Acid Rain C-8
               

Mechanics kit MEC-KIT

Mechanics Kit (MEC-KIT)

For Physics

Classical mechanics is the study of bodies in motion (and at rest), under the action of a system of forces, according to general principles that were first stated in the seventeenth century. Classical mechanics was the first branch of physics that was developed. It has important applications in other branches of physics and also in other areas of science such as astronomy, chemistry, biology, geology and engineering. The NeuLog Mechanics Kit includes the essential items for learning mechanics. Along with the NeuLog logger sensors (not included), the kit is designed to provide a simple and intuitive learning experience.

The kit consists of:

Two utility stands, Three right angle clamps, Extension clamp, Two paper baking cups, Paper cup, Ball, Ball pump, 3 m measuring tape, Sellotape, 1 meter track, Two track riders, Two track legs, Cart with hook, Reflector plate, Two 20″ rods, Two magnets in plastic cases, Rod with pulley, Rod with pulley (perpendicular), Pulley with hook, Two boss heads, Thread, Slotted mass hanger, Slotted mass holder rod (for the cart), Two 10 g slotted masses, Three 50 g slotted masses, Two 100 g slotted masses, 500 g mass, 1000 g mass, 60 cm wooden lever ruler, Fulcrum, Rough and smooth wooden block with hook, Two postal rubber bands.

NeuLog sensors required (not included):

* Experiment P-2 requires a Battery module.

  Mechanics kit main

      Mechanics kit experiments: 

    Falling Objects P-1     Walking Analysis P-2 
               
    Motion Parameters of a Moving Cart P-3     Newton’s Second Law P-4
               
    Friction Force P-6      Pulley System P-8 
               
    An Inclined Plane P-9     Velocity of Free Falling Objects P-35
               
    Simple Pendulum P-46     Horizontal Launched Projectile Motion P-49 
               

Magnets kit MAG-KIT

Magnets Kit (MAG-KIT)

For Physics

A bar magnet has two ends, known as the magnetic poles. One pole is called the north pole of the magnet and the other pole is called the south pole of the magnet. Unlike magnet poles attract each other and like poles of magnets repel each other. Magnets also attract other materials which are not normally magnetic (various sorts of metals). They create a magnetic field in the space around them.

A compass needle is a magnet and it always point to the geographic north (unless it is interrupted by another magnet), lining up with the magnetic field of the earth. The magnet’s field strength varies inversely as the square of the distance from it. This kit allows students to compare, in a very simple way, the magnetic field of two different magnets. Also, the dependence of the intensity of the magnetic field on the distance is easily experienced.

The kit consists of:

Alnico bar magnet, Two magnets in plastic cases, Ruler.

NeuLog sensor required (not included):

  Magnets kit main

      Magnets kit experiments: 

    Magnetic Field Strength  P-17     Magnetic Field P-52