{ "@context": "https://schema.org", "@type": "Organization", "name": "Brainscape", "url": "https://www.brainscape.com/", "logo": "https://www.brainscape.com/pks/images/cms/public-views/shared/Brainscape-logo-c4e172b280b4616f7fda.svg", "sameAs": [ "https://www.facebook.com/Brainscape", "https://x.com/brainscape", "https://www.linkedin.com/company/brainscape", "https://www.instagram.com/brainscape/", "https://www.tiktok.com/@brainscapeu", "https://www.pinterest.com/brainscape/", "https://www.youtube.com/@BrainscapeNY" ], "contactPoint": { "@type": "ContactPoint", "telephone": "(929) 334-4005", "contactType": "customer service", "availableLanguage": ["English"] }, "founder": { "@type": "Person", "name": "Andrew Cohen" }, "description": "Brainscape’s spaced repetition system is proven to DOUBLE learning results! Find, make, and study flashcards online or in our mobile app. Serious learners only.", "address": { "@type": "PostalAddress", "streetAddress": "159 W 25th St, Ste 517", "addressLocality": "New York", "addressRegion": "NY", "postalCode": "10001", "addressCountry": "USA" } }

Unit Two: Flashcards

(1 cards)

1
Q

Uses of radiation:

A

Smoke detectors- alpha
•weak source of alpha radiation
•source causes ionisation, and a current flows between the electrodes
•if there’s a fire then the smoke will absorb the radiation-so the current stops and the alarm sounds

Tracers in medicine (short half-life)- gamma or beta emitters
•certain radioactive isotopes can be injected into people and their progress around the body can be followed using an external detector. A computer converts the reading to a display showing where the strongest reading is coming from
•all isotopes must be gamma or beta emitters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly