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How to make a constellarium
A constellarium is a simple device used in teaching the shapes of several constellations. Get a cardboard or wood box and remove one end. Draw the shapes of various constellations on pieces of dark coloured card- board large sufficient to cover the end of the box. Punch holes on the diagrams where the stars are located in the constellations. Place an electric lamp inside the box. When the lamp is turned on and several cards are placed over the end of the box, the constellations may be seen clearly.
disadvantages of protozoa
Making a housing box for weather instruments Some of your weather instruments must be uncovered to the weather. Between these are the wind vane, the wind speed indicator and th
Determine the role of Time in soil formation Time plays a very important role in the soil formation as it provides for the soil forming processes to act and cause significant c
describe the factors which decide the broad area of scientific activity?
Hello! I have some questions related to biotechnology; study in DNA and SNPs. Any ideas for a way to cure schizophrenia, using the knowledge of SNPs? And can you tell me, if it is
State the ratio of rainfall and evaporation The ratio of rainfall and evaporation is called as P/E ratio, where P stands for precipitation and E for evaporation. If P/E ratio
Aldose-ketose isomerism We have already seen that in a monosaccharide either an aldehyde (-€HO) or a ketone (>C=O) group is present. The former is called as aldos
INTRODUCTION : In this unit, we introduce you to the fundamental of personal safety code in a laboratory. If you do not have safe laboratory practice, your life and those of your
What is the difference among a canyon, gorge, and valley? The easiest way to answer this is to describe each term, so you can see: 1) A canyon is a deep valley with steep si
three adaptations that help humans have differential survivability, and three adaptations that help humans have differential fecundity.
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