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2. Gilbert U-238 Atomic Energy Laboratory - Wikipedia

   en.wikipedia.org/wiki/Gilbert_U-238_Atomic...

   Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.

3. Desk pad - Wikipedia

   en.wikipedia.org/wiki/Desk_pad

   Typical sizes for desk pads are A3 (420 × 297 mm, 11.7 × 16.5 in) and A2 (594 × 420 mm, 16.5 × 23.4 in). Desk pads are very popular promotional products, usually branded with a logo, contact information and product or service information. Desk pads are typically glued at the foot (bottom) of the pad to prevent the paper from curling.

4. List of iPad accessories - Wikipedia

   en.wikipedia.org/wiki/List_of_iPad_accessories

   The iPad is an iPadOS-based (previously iOS) line of tablet computers designed and developed by Apple Inc.; it has a wide variety of accessories made by Apple available for it, including a screen cover specifically for the respective models of iPad called Smart Cover, as well as a number of accessories to allow the iPad to connect to other devices, some of which enable non-touchscreen input.

5. John Landis Mason - Wikipedia

   en.wikipedia.org/wiki/John_Landis_Mason

   John Landis Mason (c. 1832 in Vineland, New Jersey – February 26, 1902) was an American tinsmith and the patentee of the metal screw-on lid for antique fruit jars commonly known as Mason jars. Many such jars were printed with the line "Mason's Patent Nov 30th 1858". [1] He also invented the first screw top salt shaker in 1858.

6. Jar opener - Wikipedia

   en.wikipedia.org/wiki/Jar_opener

   A jar opener is a kitchen device which is used to open glass or plastic jars. A jar is sealed by either (a) a screw-off rubberised lid or (b) a lid placed on the opening of the jar with a rubber sealing-ring between. Screw-off lids are usually made of metal with a thin rubber sealing layer, whereas lift-off lids mostly consist of glass.

7. Leyden jar - Wikipedia

   en.wikipedia.org/wiki/Leyden_jar

   Daniel Gralath reported in 1747 that in 1746 he had conducted experiments with connecting two or three jars, probably in series. [21] In 1746–1748, Benjamin Franklin experimented with charging Leyden jars in series, [23] and developed a system involving 11 panes of glass with thin lead plates glued on each side, and then connected together ...