Informed and Connected

The short answer is no. The Bottle Rocket Launcher is designed to be used in soil and/or grass. The stakes are simply inserted into the ground.

The BRL Launch Pad is for use where soil is either unavailable or undesired such as a driveway, parking lot, or asphalt playground.

The 16101 Millikan Apparatus (with incandescent bulb) has undergone some evolution and has been replaced by the 16120 and 16125. 

We only have a small inventory of replacement parts for the 16101. Please call us for more information if you are in need of parts or repair.

The atomizer assembly and latex solution are unchanged.

Extremely super.  The Super Slinky can be stretched to approximately 50' without deformation.  It will perform up to approx. 60', but may show signs of stretch when re-stacked.  At 70', permanent bending may occur.

First generation Basic Timers (ET-38), Electronic Stop Clocks (ET-40), and photogates used a three-pin connector. 

For increased durability and interconnectivity with other logic-gate timing systems, we have reengineered our timers and photogates to use a 1/4" phono plug.  The change is more than merely mechanical -- so please do not attempt to change connectors on your current equipment.

To use an older timer with a newer photogate, an ET-49 Adapter (1/4" jack to 3-pin plug) is needed.  One ET-49 is included with every new ET-45.

To use an older photogate with a newer timer, the ET-48 Adapter (3-pin jack to 1/4" plug) is necessary.

The carts are approximately 800g. 

Plunger carts have a mean mass of 797g; plain carts of 808g.

All Science Source Company devices are for for didactic and educational use only.  They are neither designed nor intended for purposes of inspection, assessment, or monitoring of persons, materials, or environment for health and/or safety reasons.

The topic of radiological measurement and its effects is a vast one.  The units of radiological measurement are many and varied.  Our counters are designed for didactic use -- they have not been calibrated to convert from counts per minute (cpm) to disintegrations per minute (dpm), although with some experimentation such a conversion could theoretically be done in the classroom or laboratory.  They record continuous event count, count per minute (cpm), and mR/hr (milliRoentgen per hour).

Contamination is often in becquerels or curies per unit.  A source with a known activity (Curies) will have a predictable disintegrations per minute (dpm), which through an efficiency factor of the device is read as cpm.  Of course, the particle type producing that count is very important to know its effects.

Generally, Geiger counters are not designed to measure dosage or absorption. They will give a measure of activity, and much information is required to convert an activity from a source to a meaningful measure of risk.  For instance, media reports have led to many questions about the Sievert.  This is a dosage, equal to 0.01 rem (NRC dose limits are in rem), and is based upon the tissue being affected, the type and energy of the radiation, the volume exposed, and even the species of organism.  Our counters only roughly express this, in milliRoentgen/hr, which measures the rate of exposure from gamma sources in Roentgen (not the tissue-specific rem -- which is "Roentgen equivalent mammal").  This could be converted to the SI unit of the Gray (depending on the medium through which the particle passes), which in turn is used, with the above host of other factors, to calculate the Sievert.

8 to 12 microns.  

The radioactive source has a half life of 24.6 years.

The radio active source contains both alpha and beta particles.

Please note that the radioactive source ships from another location.

Recommended heat source is a Bunsen Burner or butane torch (Do not touch flame directly to product).

Size – Beads are approximately 1mm in size and are sized by screening so they are not uniform.

The Cloud Chamber uses either ethyl or methyl denatured alcohol. Common rubbing alcohol has too much water content and will freeze.