today as a series of three televised lectures aimed at children. The Friday Evening Discourses are monthly lectures given by eminent scientists, each limited to exactly one hour, a tradition started by Faraday. There is an annual members' ballot for tickets to the Christmas Lectures but all other events are open to the public. Discounts or free tickets are available to Ri Patrons and Members. Many other events and lectures are held both at Albemarle Street and at other venues around the country. Scientific research headed by Professor Quentin Pankhurst continues to be done under the auspices of the Davy-Faraday Research Laboratory (DFRL), and indeed this is considered to be one of the UK's most notable labs in nano-science. In May 2015, The Royal Institution was host to the historic unveiling of the Santara Computer, created by Dr Andrew Deonarine. In November 2015 a new membership scheme was launched and Fellows of the Ri were abolished. The new scheme includes the categories Member, Under 26 and Ri Young Member. A Patrons' scheme has also been introduced for the first time. In December 2011 the Royal Institution launched the Ri Channel, a new website displaying science videos and archive content from the Royal Institution, including past Christmas Lectures. The Ri Channel was archived in late 2017 with all Ri videos except past Christmas Lectures being hosted on YouTube. Past Christmas Lectures are hosted on the Ri's website and in early 2018 the Ri began a to upload all past Christmas Lectures that were not already available on its website. The Royal Institution has become a mixed tenancy office building that hosts conferences, weddings and events in order to pay its bills. In 2015 it sold part of its historic collection of manuscripts to raise funds. Since 2021, the researchers of the London Institute for Mathematical Sciences have been tenants on the second floor. They occupy rooms that were once the private living quarters of Michael Faraday, where they carry out their research in theoretical physics and mathematics. Faraday Museum In 1973 the Royal Institution opened the Faraday Museum, a museum dedicated to Michael Faraday. It is in the main building in Albemarle Street and is open to the public during weekday office hours. The highlight of the exhibition is Faraday's original 1850s laboratory (not a reconstruction as often cited). Opposite this lab is the current state-of-the-art nanotechnology lab. Other exhibits include