Other Science & Medicine Collectibles (1930-Now)

An English father of 2 children. for different display cases that will be coming soon. Also each and every tile will. back of each tile is a vinyl sticker with the series and series number hand written.

This coin is the exact shape, style and weight of a UK 50p and will sit perfectly with all the other rare collectable 50p coins such as kew gardens etc and will form a great part of a collection and look brilliant in an album.

Tritium is an isotope of hydrogen. The inside layer of the vial has phosphorus on it, and the tube is filled with pure tritium gas. As the tritium decays, it causes the phosphorus to glow in a green color for around 10 years.

Tritium is an Isotope of Hydrogen. It will Glow for over 10 years on its own in the dark. So how do these work?. Well Tritium is radioactive, A glass tube is coated on the inside with phosphorus and then Tritium gas is pumped in, and a laser seals it.

It was past midnight when we were talking, and there was a strange noise. When we went out to investigate due to the dark of the night we saw nothing. When we went to investigate we found that the cow had been killed by a stone that presumably fell from the sky the night before, causing the noise we had been unable to explain.

Material: mono crystalline Silicon. 10×10×10mm Cube. Purity:99.999% min.

Little over 10 ml inside at normal atmospheric pressure. Isolated from analitically pure reagents, cleaned, dried and redistilled.

Isua (Greenland) Archean Rock. Abundant tourmaline crystals (feruvite in chemical composition) were found in the examined rocks. Banded Iron Formation. This model is consistent with the previously proposed chemical evolution model based on clay-rich marine.

However, the presence of the cloudy zone in taenite and the Ni profile across the kamacite-taenite boundaries indicates that the cooling rate was very slow at lower temperatures (~1-10 °C/Myr at <600-700 °C).

They can also be used for a Geiger counter check. We take your privacy very seriously. None of your information will ever be passed on to any third party.

Purity should be at least 3N (99.9%) or probably better, however I have no way to verify it, so it is sold as 99.9% pure. Weight: ~2-3g.

For sale is a Otis King's patent calculator by Carbic Ltd;.

An English father of 2 children. for different display cases that will be coming soon. Also each and every tile will. back of each tile is a vinyl sticker with the series and series number hand written.

This is for a German 18th Century pocket sundial signed Johan Schrettegger. It is signed on the base and marked Ausb and the top is hinged as shown. It looks to be working and the pointer is moving, but i am unsure how it works exactly.

Original 1976 Sinclair Sovereign "gold" calculators in a wooden presentation box with original instruction leaflet. Two calculators are included in the box. The outer cardboard box is in a worn condition ( see photos), but the wooden box is in a good condition outside, inside the box is showing marks from the contents.

Of box including handle 17 1/2 in.Original lacquer.Very good condicion overall.

Material: Mono crystalline Germanium;. Surface quality: 6 sides fine ground;. Net weight: 5.3grams;. Tolerance: /-0.05mm;.

For different display cases that will be coming soon. Also each and every tile will. back of each tile is a vinyl sticker with the series and series number hand written. The purity's are usually 99.5% and above.

Each is in its own Airtight Acrylic Tile. An English father of 2 children. These 1 gram bars of pure. 999 Silver are great for any collection. for different display cases that will be coming soon. Also each and every tile will.

Size and shape of the hands will vary at random from what's pictured.

Most Fusible Alloy in Existence! Excellent Material forMaterial Sciences Engineers, Teachers, Hobbists, Mold Makers andInventors. The photo says it all ! You will receive 3 to 6 small rectangular ingots of various weights to a full net weight of 40 grams.

ALSO INCLUDES 3 BOXES OF SILK FROM THE INTERNATIONAL SILK GUILD, INC. ALL OF THE SAMPLES ARE LABELED.

This coin is the exact shape, style and weight of a UK 50p and will sit perfectly with all the other rare collectable 50p coins such as kew gardens etc and will form a great part of a collection and look brilliant in an album.

All of them are original like you can see in the pics.

All of them are original like you can see in the pics.

Посмотрите на фотографии.

They are 99.999% pure Silver and are great for any collection. Symbol: Ag. Boiling point: 2162°C (3924°F). We take your privacy very seriously. None of your information will ever be passed on to any third party.

PRICE REDUCED! This set was made in the Soviet Union (country that does not exist any longer) in 1961. Weights range from 100 g to 10 mg (0.01g) or 0.00035274 ounces. Original certificate in Russian language is included.

All of them are original like you can see in the pics.