On a bright, sunny day, use tonic water to detect ultraviolet (UV) light from the Sun in this DIY Sun Science Activity from Lawrence Hall of Science.
Our best home experiments and maker projects from 2014.
| Cookie | Duration | Description |
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| __cf_bm | 30 minutes | This cookie, set by Cloudflare, is used to support Cloudflare Bot Management. |
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| __jid | 30 minutes | Cookie used to remember the user's Disqus login credentials across websites that use Disqus. |
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| countryCode | session | This cookie is used for storing country code selected from country selector. |
| Cookie | Duration | Description |
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| _fbp | 3 months | This cookie is set by Facebook to display advertisements when either on Facebook or on a digital platform powered by Facebook advertising, after visiting the website. |
| fr | 3 months | Facebook sets this cookie to show relevant advertisements to users by tracking user behaviour across the web, on sites that have Facebook pixel or Facebook social plugin. |
| IDE | 1 year 24 days | Google DoubleClick IDE cookies are used to store information about how the user uses the website to present them with relevant ads and according to the user profile. |
| NID | 6 months | NID cookie, set by Google, is used for advertising purposes; to limit the number of times the user sees an ad, to mute unwanted ads, and to measure the effectiveness of ads. |
| personalization_id | 2 years | Twitter sets this cookie to integrate and share features for social media and also store information about how the user uses the website, for tracking and targeting. |
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| YSC | session | YSC cookie is set by Youtube and is used to track the views of embedded videos on Youtube pages. |
| yt-remote-connected-devices | never | YouTube sets this cookie to store the video preferences of the user using embedded YouTube video. |
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| Cookie | Duration | Description |
|---|---|---|
| _dc_gtm_UA-28243511-20 | 1 minute | No description |
| abtest-identifier | 1 year | No description |
| AnalyticsSyncHistory | 1 month | No description |
| ARRAffinityCU | session | No description available. |
| ccc | 1 month | No description |
| COMPASS | 1 hour | No description |
| cookies.js_dtest | session | No description |
| debug | never | No description available. |
| donation-identifier | 1 year | No description |
| f | never | No description available. |
| GFE_RTT | 5 minutes | No description available. |
| incap_ses_1185_2233503 | session | No description |
| incap_ses_1185_823975 | session | No description |
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| incap_ses_198_2233503 | session | No description |
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| incap_ses_340_2233503 | session | No description |
| incap_ses_340_823975 | session | No description |
| incap_ses_340_972453 | session | No description |
| incap_ses_374_2233503 | session | No description |
| incap_ses_374_823975 | session | No description |
| incap_ses_374_972453 | session | No description |
| incap_ses_375_2233503 | session | No description |
| incap_ses_375_823975 | session | No description |
| incap_ses_375_972453 | session | No description |
| incap_ses_455_2233503 | session | No description |
| incap_ses_455_823975 | session | No description |
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| incap_ses_8076_2233503 | session | No description |
| incap_ses_8076_823975 | session | No description |
| incap_ses_8076_972453 | session | No description |
| incap_ses_867_2233503 | session | No description |
| incap_ses_867_823975 | session | No description |
| incap_ses_867_972453 | session | No description |
| incap_ses_9117_2233503 | session | No description |
| incap_ses_9117_823975 | session | No description |
| incap_ses_9117_972453 | session | No description |
| li_gc | 2 years | No description |
| loglevel | never | No description available. |
| msToken | 10 days | No description |