A small speed-lathe, suitable for turning wood or small metal articles, may be easily made at very little expense. A lathe of this kind is shown in the cut (Fig.…
This is a box trap with glass sides and back, the panes of glass being held in place by brads placed on both sides. The animal does not fear to…
The sounder, Fig. 1, is made from an old electric-bell magnet, D, fastened to a wooden base. The lever, A, can be made of brass and the armature, C, is…
Nearly everyone has heard of the pin-hole camera, but the fact that the same principle can be used to make a microscope, having a magnifying power of 8 diameters (64…
Secure a piece of tubing about 1-3/4 in. long that will fit the connection to the reproducer, and wrap a quantity of heavy thread around one end as shown in…
Rain GaugeAn accurate rain gauge may be easily constructed from galvanized iron, as shown in the sketch herewith. The funnel, A, overlaps and rests on the body, B, and discharges…
Explore what is soil made of trough this experiment for kids. You will need: a handful of garden soil or forest floor soil water a small stick a small glass…
Shut your eyes tight—all you can see is darkness. Now open your eyes again. If it is daytime, you will see that light is all around you. What is Natural…