Radiometer

SKU: 7687
Radiometer
Radiometer
Radiometer
Radiometer

Radiometer

SKU: 7687
Option
Size
Regular price £24.99
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These curious and mesmerising instruments measure the power of electromagnetic radiation. Made from a glass bulb with much of the air removed to form a partial vacuum, inside is a set of fine metal vanes, each with one dark and one light side, mounted on a spindle. The vanes rotate, as if by magic, when exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough) – the more intense the light, the faster the rotation.

For in-stock items despatched from our own warehouse, we offer three UK delivery options:
Standard UK Delivery: £5.99.
On this service, goods will usually arrive within a week of dispatch. 
3-Day Delivery: £7.99. This is a three-working-day (not Saturday, Sunday, or Bank Holidays) service for UK mainland and Ulster addresses, provided that you order before 1pm. Orders received after 1pm will be processed on the next working day, so take one day longer to arrive. If you require an item to be personalised, your order will be delayed by one working day.
Express Delivery: £9.99. This is a next-working-day (not Saturday, Sunday, or Bank Holidays) service for UK mainland and Ulster addresses, provided that you order before 1pm. Orders received after 1pm will be processed on the next working day, so take one day longer to arrive. Service to Scotland, Northern Ireland, Isle of Wight and other UK Islands takes two days. If you require an item to be personalised, your order will take an additional working day. Your package will arrive between 9am and 6pm (may be up to 8pm), and must be signed for on receipt, so please give an address where there will be somebody available to take delivery (perhaps a neighbour/friend, or your workplace if your employer permits this).

For items despatched by third party suppliers
Admiralty chart prints and aircraft models/cufflinks made from original materials are sent to you directly from the makers, and are offered on a Standard delivery service only - please allow 7-10 days. These items are marked with a 7-10 day delivery icon below.

Delivery Information (Overseas)
We are currently unable to deliver to EU addresses due to the high and unpredictable costs, customs charges, and courier handling fees. Our other overseas delivery charges (standard service only) are:
Channel Islands (7-10 Days), £20
Rest of World. From about £50, depending on what you order. 
Please phone on +44 1932 235550 or e-mail us on mailorder@nauticalia.com for a quote. Outside Europe, most orders arrive within 21 days.

VAT (sales tax) will be deducted from the listed price of your goods where applicable for customers outside the UK, including those from the Channel Islands.

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